Era cenozoic

Era Cenozoic (± 66 juta tahun yang laluーsaat ini) Pengertian zaman Kenozoikum, Cenozoic, Senozoikum, atau Neozoikum adalah era terakhir dari skala waktu geologi yang udah kita bahas di atas. Era ini berlangsung sekitar 66 juta tahun yang lalu sampai saat ini. Yap, kita hidup pada era Kenozoikum, guys.

The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.Jun 11, 2018 · Cenozoic (Cainozoic, Kainozoic) Era of geologic time extending from about 65 million years ago to the present. It includes the Tertiary and Quaternary Periods: the so-called ages of mammals and man. Molluscs and microfossils are used in the stratigraphic subdivision of the era. The Alpine—Himalayan orogeny reached its climax during this ... The Cenozoic Era. The most recent era in Earth's timeline is the Cenozoic Era - an era which literally means "New Life.". It is an era which spans 65 million years till the present and is often called by paleontologist the Age of Mammals. That's because this is the period on the geological time scale in which mammals moved into the ...Sep 9, 2019 · the Palaeozoic, an era of arthropods, amphibians, fishes, and the first life on land; the Mesozoic, which spanned the rise, reign of reptiles, climactic extinction of the non-avian dinosaurs, the evolution of mammals and birds; and; the Cenozoic, which saw the rise of mammals. Mesozoic. Mesozoic (252-66 million years ago) means 'middle life' and this is the time of the dinosaurs. This era includes the Triassic, Jurassic, and Cretaceous Periods, names that may be familiar to you. It ended with a massive meteorite impact that caused a mass extinction, wiping out the dinosaurs and up to 80% of life on Earth.Feb 28, 2020 · Following the Mesozoic era was the Cenozoic, which began about 66 million years ago. This period is also known as the "Age of Mammals," as large mammals, following the extinction of the dinosaurs, became the dominant creatures on the planet. In the process, mammals diversified into the many species still present on the Earth today. Answer: The three eras of geologic time are the Paleozoic Era, the Mesozoic Era, and the Cenozoic Era. Question: Which era do we live in? Answer: The era that we live in is the Cenozoic Era. Question: When you were born, which era was it? Answer: The era I was born in was the Cenozoic Era. Question: During which era did the first fish …

Neogene Period, the second of three divisions of the Cenozoic Era. The Neogene Period encompasses the interval between 23 million and 2.6 million years ago and includes the Miocene and the Pliocene epochs. Learn more about the Neogene Period in this article.Cenozoic Era. Paleogene Period. c. 63 Ma – First creodonts. c. 62 Ma – Fall in sea level and the retreat of inland seas completes the emergence of North America; First penguins appear – Genus Crossvallia, the earliest known birds suited to an aquatic lifestyle, alongside Kupoupou appear in the fossil record of Antarctica (from the Cross ...The Mesozoic Era is literally the era of “middle life.”. It is also known as the age of dinosaurs. It lasted from 245 to 65 million years ago and is divided into the three periods described in Figure below. The Mesozoic began with the supercontinent Pangaea. Then, during the era, Pangaea broke up and the continents drifted apart. Later into the period it began to withdraw and the coastal plains of the western states were home to dinosaurs like Edmontosaurus, Triceratops, and Tyrannosaurus. Another mass extinction ended the reign of the dinosaurs. The Cenozoic era began afterward. The inland sea of the Cretaceous gradually vanished and mammals were beginning to dominate ...Study with Quizlet and memorize flashcards containing terms like Reptiles first appeared during the _____ era. Paleozoic Triassic Mesozoic Cenozoic Jurassic, We are living during the _____era. Neogene Cenozoic Paleozoic Paleogene Mesozoic, Dinosaurs went extinct during the _____. Devonian Precambrian Mesozoic Cenozoic Carboniferous and more.The last period of the Paleozoic, the Permian is a very dead area. With the combined efforts of the Carboniferous Rainforest Collapse and the combination of the two super continents, Gondwana and Laurasia lead to some of the driest time of the Earth's history. You can explore the world, just a small time before the end, when massive flood ...

These two eras are called the Mesozoic and Cenozoic. Dinosaurs were prevalent during the Mesozoic Era and extinct during the Cenozoic Era. The last segment of the Mesozoic Era, from 135 to 65 millions of years ago, is called the Cretaceous Period. The first segment of the Cenozoic Era, from 65 million years ago until the present, has ...At the same time, some earlier Mesozoic gymnosperms, like Conifers continued to thrive, although other taxa like Bennettitales died out before the end of the period. Cenozoic flora. The Cenozoic began at the Cretaceous–Paleogene extinction event with a massive disruption of plant communities. It then became just as much the age of savannas ...The Cenozoic Era (65 mya–Present) The mass extinction at the end of the Mesozoic Era allowed the surviving groups, including the flowering plants and mammals, to thrive during the following era. The Cenozoic Era is divided into the Tertiary and Quaternary periods, with the former spanning the interval 65–2.6 mya, and the latter encompassing ...SuperEon ==> Eon ==> Era ==> Period ==> Epoch. Hadean Eon. The Hadean eon (4,540 – 4,000 mya) represents the time before a reliable (fossil) record of life. Temperatures are extremely hot, and much of the Earth was molten because of frequent collisions with other bodies, extreme volcanism and the abundance of short-lived …

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The Mesozoic is the middle of the three eras since complex life evolved: the Paleozoic, the Mesozoic, and the Cenozoic. The era began in the wake of the Permian-Triassic extinction event, the largest well-documented mass extinction in Earth's history, and ended with the Cretaceous-Paleogene extinction event, another mass extinction whose ...The Cenozoic Era had been traditionally divided either into the Tertiary and Quaternary ("third" and "fourth") periods or into the Paleogene and Neogene ("old"- and "new"-"birth") periods. In 2009, the International Union of Geological Sciences (IUGS) formally adopted a three-fold division—Paleogene, Neogene, and ...Science. Reference. Paleogene Period. Learn about the time period that took place 65 to 23 million years ago. 3 min read. At the dawn of the Paleogene—the beginning of the Cenozoic...The Cenozoic is Earth's current geological era, representing the last 66 million years of Earth's history. It is characterised by the dominance of mammals, birds, conifers and flowering plants, a cooling and drying climate, and the current configuration of continents. It is the latest of three geological eras since complex life evolved, preceded by the Mesozoic and Paleozoic. It started with ...

An era is the second largest geochronologic time unit and is the equivalent of a chronostratigraphic erathem. [7] [12] As of April 2022 [update] there are currently ten defined eras/erathems, [2] namely the Eoarchean , Paleoarchean , Mesoarchean , Neoarchean , Paleoproterozoic , Mesoproterozoic , Neoproterozoic , Paleozoic , Mesozoic and ...1 day ago · Study with Quizlet and memorize flashcards containing terms like Reptiles first appeared during the _____ era. Paleozoic Triassic Mesozoic Cenozoic Jurassic, We are living during the _____era. Neogene Cenozoic Paleozoic Paleogene Mesozoic, Dinosaurs went extinct during the _____. Devonian Precambrian Mesozoic Cenozoic Carboniferous and more. Asia. Asia - Cenozoic, Plate Tectonics, Climate: The Cenozoic (i.e., the past 66 million years) was the time when Asia acquired its present appearance. The most important tectonic event in the Cenozoic history of Asia was its collision with India some 40 to 50 million years ago. That collision took place about 1,250 miles (2,000 km) south of ... Phanerozoic Eon, the span of geologic time extending about 541 million years from the end of the Proterozoic Eon (which began about 2.5 billion years ago) to the present. The Phanerozoic, the eon of visible life, is divided into three major spans of time largely on the basis of characteristic.The Cenozoic era is the "age of mammals .". During the Cenozoic, mammals diverged from a few small, simple, generalized forms into a diverse collection of terrestrial, marine, and flying animals. The Cenozoic era is just as much the age of savannas, or the age of co-dependent flowering plants and insects. Birds also evolved substantially in ...The meaning of PALEOZOIC is of, relating to, originating in, or being an era of geologic history that extends from the beginning of the Cambrian to the close of the Permian and is marked by the culmination of nearly all classes of invertebrates except the insects and in the later epochs by the appearance of terrestrial plants, amphibians, and reptiles; also : …The Mesozoic Era is literally the era of “middle life.”. It is also known as the age of dinosaurs. It lasted from 245 to 65 million years ago and is divided into the three periods described in Figure below. The Mesozoic began with the supercontinent Pangaea. Then, during the era, Pangaea broke up and the continents drifted apart. Cenozoic. Cenozoic (66 million years ago until today) means ‘recent life.’. During this era, plants and animals look most like those on Earth today. Periods of the Cenozoic Era are split into even smaller parts known as Epochs, so you will see even more signposts in this Era. Cenozoic signposts are colored yellow. Terror bird is tired of hunting alone. She saw a dead Steppe Mammoth being devoured by two dire wolves. She decided to steal the meat instead.Featuring anima...1 day ago · Study with Quizlet and memorize flashcards containing terms like Reptiles first appeared during the _____ era. Paleozoic Triassic Mesozoic Cenozoic Jurassic, We are living during the _____era. Neogene Cenozoic Paleozoic Paleogene Mesozoic, Dinosaurs went extinct during the _____. Devonian Precambrian Mesozoic Cenozoic Carboniferous and more.

Cenozoic Era: (248 mya-present) Paleocene | Eocene | Oligocene | Miocene | Pliocene | Pleistocene | Holocene. Eocene Epoch (54-33 mya) Early in the Eocene, the global climate remains warm. As the ...

After the Permian Extinction wiped out over 95% of ocean-dwelling species and 70% of land species, the new Mesozoic Era began about 250 million years ago. The first period of the era was called the Triassic Period. The first big change was seen in the types of plants that dominated the land. Most of the species of plants that survived the ...The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era.Aerial view of Dhaka, the capital of Bangladesh. Photograph: M Rahman/Alamy. Asaduzzaman Asad preceded most in his migration to the capital, arriving from the western district of Jhenaidah in 1966 ...This era was between about 250 to 66 million years ago. During this period, life evolved and diversified. It gets its name from the Greek language, which means ‘Middle life.’. This period is also famous as the age of dinosaurs or the age of reptiles. The Mesozoic era existed between the Paleozoic and the Cenozoic era.Find Cenozoic Era stock images in HD and millions of other royalty-free stock photos, 3D objects, illustrations and vectors in the Shutterstock collection.The Triassic Period (252-201 million years ago) began after Earth's worst-ever extinction event devastated life. The Permian-Triassic extinction event, also known as the Great Dying, took place roughly 252 million years ago and was one of the most significant events in the history of our planet. It represents the divide between the Palaeozoic ...Precambrian. _________ were the dominant vertebrate life form during the Mesozoic era. Dinosaurs. Most modern animal phyla evolved during the _________ era. Paleozoic. Bony fish first evolved during the _________. Paleozoic. Which of the following options correctly lists the varieties of life in the order that they appear in the geologic record ...The Cenozoic era allowed mammals to flourish in the absence of dinosaurs. Mammals evolved to fill the spaces left by the dinosaur extinction. Smaller mammals grew bigger during this period. These mammals also took the dominating position dinosaurs had over other animals. The Cenozoic era can be divided into three periods.Era Cenozoic (± 66 juta tahun yang laluーsaat ini) Pengertian zaman Kenozoikum, Cenozoic, Senozoikum, atau Neozoikum adalah era terakhir dari skala waktu geologi yang udah kita bahas di atas. Era ini berlangsung sekitar 66 juta tahun yang lalu sampai saat ini. Yap, kita hidup pada era Kenozoikum, guys.During the Cenozoic Era (the last 65 million years), the climate started out warm and gradually cooled to today. This warm time is called the Paleocene-Eocene Thermal Maximum and Antarctica and Greenland were ice-free during this time. Since the Eocene, tectonic events during the Cenozoic caused persistent and significant planetary cooling.

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Tethys Sea, tropical body of salt water that existed from the end of the Paleozoic Era until the Cenozoic Era. Initially, it separated the supercontinents of Laurasia and Gondwana before they fragmented into the modern continents. Tethys was named after the sister and consort of the ancient Greek god Oceanus.Sejarah terbentuknya Kepulauan Indonesia. Pulau-pulau cikal bakal dari kepulauan Indonesia mulai terbentuk sekitar 50 juta tahun lalu (Mya).Pada Periode Quaternary (sekitar 2 juta tahun yang lalu- sekarang) itulah proses utama pembentukan kepulauan Indonesia. sekitar 1 juta tahun yang lalu, pada saat Pulau Sumatra, Pulau …Paleozoic Era, also spelled Palaeozoic, major interval of geologic time that began 538.8 million years ago with the Cambrian explosion, an extraordinary diversification of marine animals, and ended about 252 million years ago with the end-Permian extinction, the greatest extinction event in Earth history. The major divisions of the Paleozoic Era, …http://ocean.si.edu/through-time/cenozoic-era The Cenozoic EraTertiary Period, former official interval of geologic time lasting from approximately 66 million to 2.6 million years ago. It is the traditional name for the first of two periods in the Cenozoic Era (66 million years ago to the present); the second is the Quaternary Period (2.6 million years ago to the present).The meaning of PALEOZOIC is of, relating to, originating in, or being an era of geologic history that extends from the beginning of the Cambrian to the close of the Permian and is marked by the culmination of nearly all classes of invertebrates except the insects and in the later epochs by the appearance of terrestrial plants, amphibians, and reptiles; also : …Wikimedia Commons. Ancestral turtles and tortoises branched off from the mainstream of reptile evolution hundreds of millions of years ago, and have persisted pretty much unchanged down to the present day. On the following slides, you'll find pictures and detailed profiles of over a dozen prehistoric turtles of the Mesozoic and Cenozoic Eras, …The Mesozoic Era is literally the era of “middle life.”. It is also known as the age of dinosaurs. It lasted from 245 to 65 million years ago and is divided into the three periods described in Figure below. The Mesozoic began with the supercontinent Pangaea. Then, during the era, Pangaea broke up and the continents drifted apart.Asia. Asia - Cenozoic, Plate Tectonics, Climate: The Cenozoic (i.e., the past 66 million years) was the time when Asia acquired its present appearance. The most important tectonic event in the Cenozoic history of Asia was its collision with India some 40 to 50 million years ago. That collision took place about 1,250 miles (2,000 km) south of ...1) A common squirrel. For many years scientists believed that almost all animal lineages burst into being during the Cambrian era (just after the end of the Precambrian super eon). However, there have been many recent findings of animal-like fossils and "trace fossils" from the late Precambrian. Which of the following best describes why it took ...Precambrian. _________ were the dominant vertebrate life form during the Mesozoic era. Dinosaurs. Most modern animal phyla evolved during the _________ era. Paleozoic. Bony fish first evolved during the _________. Paleozoic. Which of the following options correctly lists the varieties of life in the order that they appear in the geologic record ... ….

Cenozoic Era - Mammals, Plants, Climate: Cenozoic life was strikingly different from that of the Mesozoic. The great diversity that characterizes modern-day flora is attributed to the explosive expansion and adaptive radiation of the angiosperms (flowering plants) that began during the Late Cretaceous. As climatic differentiation increased over the course of the …The Eocene (IPA: / ˈ iː ə s iː n, ˈ iː oʊ-/ EE-ə-seen, EE-oh-) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. Cenozoic Era (3) - View presentation slides online.We Now Live In The ________ Era. September 16, 2023. Question: In order from oldest to present, what are the three eras of geologic time? Answer: The three eras of geologic time are the Paleozoic Era, the Mesozoic Era, and the Cenozoic Era. Question: Which era do we live in?Geologic Time Scale. Humans subdivide time into useable units such as our calendar year, months, weeks, and days; geologists also subdivide time. They have created a tool for measuring geologic time, breaking it into useable, understandable segments. For the purposes of geology, the “calendar” is the geologic time scale.The Cenozoic Era is subdivided into the Paleogene (palaios=old, genos=birth), Neogene, and Quaternary periods. The Paleogene Period (and System) is subdivided into three Epochs (and Series) ( Fig. 28.1 ): the Paleocene, Eocene, and Oligocene, referring again to the evolution of the biota (eos=dawn and oligos=little).Zordon is a powerful mentor of the Power Rangers and is played and voiced by Bryan Cranston in the 2017 movie. He was once the Red Ranger. Millions of years ago, during the Cenozoic period, Zordon was on Earth as the Red Ranger along other Rangers in order to battle Rita Repulsa, the Green Ranger. She nearly succeeded, killing Zordon's team, …Neogene Period, Cenozoic Era, Phanerozoic Eon [23 Myr - 1.8 Myr ] In the time scale of Lutgens & Tarbuck, the Neogene Period and the Paleogene Period below are combined and called the Tertiary Period. Calling this span from roughly 66 Myr to 1.8 Myr the Tertiary Period is fairly common in geologic literature.Terror bird is tired of hunting alone. She saw a dead Steppe Mammoth being devoured by two dire wolves. She decided to steal the meat instead.Featuring anima... Era cenozoic, The Cambrian Period is the first geological time period of the Paleozoic Era (the "time of ancient life"). This period lasted from 541 million to 485.4 million years ago, or more than 55 million ..., Mesozoic. Mesozoic (252-66 million years ago) means 'middle life' and this is the time of the dinosaurs. This era includes the Triassic, Jurassic, and Cretaceous Periods, names that may be familiar to you. It ended with a massive meteorite impact that caused a mass extinction, wiping out the dinosaurs and up to 80% of life on Earth., The Cenozoic Era is the most recent of the three major subdivisions of animal history. The other two are the Mesozoic and Paleozoic Eras. The Cenozoic spans only about 65 million years, from the end of the Cretaceous Period and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called as the Age of Mammals, because ..., Asia. Asia - Cenozoic, Plate Tectonics, Climate: The Cenozoic (i.e., the past 66 million years) was the time when Asia acquired its present appearance. The most important tectonic event in the Cenozoic history of Asia was its collision with India some 40 to 50 million years ago. That collision took place about 1,250 miles (2,000 km) south of ... , 5: Evolution. 5.11: Cenozoic Era - The Age of Mammals., Following the Mesozoic era was the Cenozoic, which began about 66 million years ago. This period is also known as the "Age of Mammals," as large mammals, following the extinction of the dinosaurs, became the dominant creatures on the planet. In the process, mammals diversified into the many species still present on the Earth today., The Cenozoic Era. The most recent era in Earth's timeline is the Cenozoic Era - an era which literally means "New Life.". It is an era which spans 65 million years till the present and is often called by paleontologist the Age of Mammals. That's because this is the period on the geological time scale in which mammals moved into the ..., Apr 27, 2023 · The Cenozoic Era is the "Age of Mammals." North America’s characteristic landscapes began to develop during the Cenozoic. Birds and mammals rose in prominence after the extinction of giant reptiles. Common Cenozoic fossils include cat-like carnivores and early horses, as well as ice age woolly mammoths. The Pleistocene Ice Ages began about 2. ... , An era is the second largest geochronologic time unit and is the equivalent of a chronostratigraphic erathem. [7] [12] As of April 2022 [update] there are currently ten defined eras/erathems, [2] namely the Eoarchean , Paleoarchean , Mesoarchean , Neoarchean , Paleoproterozoic , Mesoproterozoic , Neoproterozoic , Paleozoic , Mesozoic and ... , Asia. Table of Contents. Asia - Cenozoic, Plate Tectonics, Climate: The Cenozoic (i.e., the past 66 million years) was the time when Asia acquired its present appearance. The most important tectonic event in the …, The meaning of CENOZOIC is of, relating to, or being an era of geologic history that extends from the beginning of the Tertiary period to the present time and is marked by a rapid evolution of mammals and birds and of angiosperms and especially grasses and by little change in the invertebrates; also : relating to the corresponding system of rocks. , Cenozoic definition, noting or pertaining to the present era, beginning 65 million years ago and characterized by the ascendancy of mammals. See more. , Masa Mesozoikum dibagi menjadi tiga periode. Berikut pembagiannya dari yang tertua hingga termuda. 1. Zaman Trias. Zaman Trias ditandai dengan kemunculan reptil dan Dinosaurus. Selain itu, jumlah mamalia, reptil air, amonit, gastropoda, dan bivalvia juga semakin banyak. Baca juga: Masyarakat Prasejarah: Kebudayaan Bacson-Hoabinh., The Hadean (IPA: / h eɪ ˈ d iː ə n, ˈ h eɪ d i ə n / hay-DEE-ən, HAY-dee-ən) [] is the first and oldest of the four known geologic eons of Earth's history.It started with the planet's formation about 4.54 Bya, now defined as (4567.30 ± 0.16) Mya set by the age of the oldest solid material in the Solar System found in some meteorites about 4.567 billion years old., Cenozoic Era is the last geologic period and is often referred as the age of mammals. It is thought to begin 65 million years ago and continued till present. The name Cenozoic means new life. With the destruction and perish of dinosaurs by the end of the Cretaceous period, this era has set the stage for the rising and abundance of mammals ..., The K–Pg boundary marks the end of the Cretaceous Period, the last period of the Mesozoic Era, and marks the beginning of the Paleogene Period, the first period of the Cenozoic Era. Its age is usually estimated at around 66 million years, with radiometric dating yielding a more precise age of 66.043 ± 0.011 Ma., Cenozoic definition, noting or pertaining to the present era, beginning 65 million years ago and characterized by the ascendancy of mammals. See more., The Tertiary Period (65 million years ago to 2.6 million years ago) The first period in the Cenozoic Era is called the Tertiary Period. It began directly after the K-T Mass Extinction (the “T” in “K-T” stands for “Tertiary”). At the very beginning of the time period, the climate was much hotter and more humid than our current climate., The four eras in the history of marketing are known as the production era, sales era, marketing era and marketing control, or relationship, era. Some analyses only include the first three of these., The current era on the geologic time scale is the Cenozoic Era. The era began after the K-T extinction resulted in the end of the Mesozoic Era around 65 million years ago. The extinction of the dinosaurs gave mammals the chance to prolifera..., Although smilodon is by far the most famous saber-toothed cat, it wasn't the only member of its fearsome breed during the Cenozoic Era: this family included over a dozen genera, including barbourofelis, homotherium, and megantereon. Further complicating matters, paleontologists have identified "false" saber-toothed and "dirk …, Paleontologists have discovered putative snake fossils dating as far back as 150 million years, to the late Jurassic period, but the traces are so evanescent as to be practically useless. ... The Giant Prehistoric Snakes of the Cenozoic Era . Speaking of giant monitor lizards, ..., Período da Era Cenozóica iniciado há 65,5 milhões de anos e encerrado 23,03 milhões de anos atrás. Divide-se nas épocas Paleoceno, Eoceno e Oligoceno, da mais antiga para a mais recente. É o período do aparecimento dos mamíferos modernos, com extinção das espécies arcaicas. Verificou-se evolução também das espécies …, Figure 8.3.1 8.3. 1: Geologic Time Scale with ages shown. The Hadean Eon, named after the Greek god and ruler of the underworld Hades, is the oldest eon and dates from 4.5–4.0 billion years ago. This time represents …, The Cenozoic Era literally means the era of “modern life.”. It is also called the age of mammals. Mammals took advantage of the extinction of the dinosaurs. They flourished and soon became the dominant animals on Earth. The Cenozoic began 66 million years ago and continues to the present. It may be divided into three periods: The Paleogene ..., the Palaeozoic, an era of arthropods, amphibians, fishes, and the first life on land; the Mesozoic, which spanned the rise, reign of reptiles, climactic extinction of the non-avian dinosaurs, the evolution of mammals and birds; and. the Cenozoic, which saw the rise of mammals. The Phanerozoic is divided into three eras: the Paleozoic, Mesozoic ..., Most of the tectonic activity was found in lands that make up the modern-day Eastern Seaboard of the United States, with the Taconian, Acadian, Alleghanian, and Ouachita orogenies helped to build North America and …, The Cenozoic is Earth's current geological era, representing the last 66 million years of Earth's history. It is characterised by the dominance of mammals, birds, conifers and flowering plants, a cooling and drying climate, and the current configuration of continents. It is the latest of three geological eras since complex life evolved, preceded by the Mesozoic and Paleozoic. It started with ... , The Cenozoic Timescale and Paleogeography. This chart at the left shows the subdivisions of the Cenozoic Era. The Cenozoic spans an interval of time from 65 million years ago until the present. The era is divided into two periods, the Paleogene and the Neogene. These, in turn, are subdivided into shorter intervals of time called epochs., The Cambrian Period is the first geological time period of the Paleozoic Era (the "time of ancient life"). This period lasted from 541 million to 485.4 million years ago, or more than 55 million ..., The Miocene Epoch. At right is pictured (in front), Chalicotherium, a Miocene mammal from Kazakhstan. Chalicotherium was an unusual "odd-toed" hoofed mammal, or perissodactyl. Both the perissodactyls and artiodactyls underwent a period of rapid evolution during the Miocene. The Miocene Epoch, 23.03 to 5.3 million years ago,* was a time of ..., the Palaeozoic, an era of arthropods, amphibians, fishes, and the first life on land; the Mesozoic, which spanned the rise, reign of reptiles, climactic extinction of the non-avian dinosaurs, the evolution of mammals and birds; and. the Cenozoic, which saw the rise of mammals. The Phanerozoic is divided into three eras: the Paleozoic, Mesozoic ..., Meet the Snakes of the Mesozoic and Cenozoic Eras . Titanoboa. Wikimedia Commons. Snakes, like other reptiles, have been around for tens of millions of years--but tracing their evolutionary lineage has been a huge challenge for paleontologists. ... Historical Period. Late Cretaceous (90-85 million years ago) Size and Weight. About 6-10 feet ...