Facts about Mammal-like Reptiles, an extinct prehistoric animal

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Dinosaur Jungle   >   Other Prehistoric Animals   >   Mammal-like Reptiles

Mammal-like Reptiles



Scientific Classification
  Kingdom Animalia
  Phylum Chordata
  Class Synapsida
Amniotes (tetrapod vertebrate animals with a terrestrially adapted eggs) are traditionally divided into three categories:
  • Anapsids - Animals with a box-like skull without openings. This group includes the early reptiles of the Carboniferous and Permian periods (and to a limited extent the Triassic period), and includes animals such Scutosaurus. This group may also include turtles, however many scientists believe that turtles are actually descended from Diapsid reptiles which lost their skull openings.

  • Diapsids - Reptiles with two temporal holes (fenestra) in their skulls, and their descendents. This group includes archosaurs (including crocodilians, dinosaur species and birds), as well as lepidosaurs such as lizards, snakes, and sphenodonts - even though many of these groups have lost one hole (lizards), both holes (snakes), or have heavily modified skulls (birds).

  • Synapsids (also sometimes known as "Theropsids") - Animals with a single temporal opening (fenestra) in theirn skull behind each eye. This group includes many reptiles, known as "mammal-like reptiles", as well as mammals. Some examples of mammal-like reptiles include Cynodonts, Dicynodonts, Gorgonopsians (including Lystrosaurs), Dinocephalians like Estemmenosuchus, Moschops and Struthiocephalus, as well as Pelycosaurs like Dimetrodon, Edaphosaurus, Sphenacodon, and Varanosaurus.

Mammal-like Reptiles Timeline:



Mammal-like Reptiles were one of the main groups of amniotes, including the ancestors of all modern mammals, and lived between 324 and 100 million years ago

Mammal-like Reptiles were one of the main groups of amniotes, including the ancestors of all modern mammals, and lived between 324 and 100 million years ago


Related Information & Resources


See Also

Mammal-like Reptile Books


Here are some books from Amazon.com:

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Ecology and Biology of Mammal-Like Reptiles
By Paul D. MacLean & E. Carol Roth

Smithsonian
Paperback (326 pages)

Ecology and Biology of Mammal-Like Reptiles
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World of Eric Carle, Hear Bear Roar 30 Animal Sound Book - PI Kids (The World of Eric Carle: Play-a-sound)
By Editors of Phoenix International Publications

Phoenix International Publications, Inc.
Hardcover (24 pages)

World of Eric Carle, Hear Bear Roar 30 Animal Sound Book - PI Kids (The World of Eric Carle: Play-a-sound)
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Product Description:

Your little animal lovers will love hearing the amazing art of Eric Carle come alive! This sound book includes 30 animal themed sound buttons to press and captivating creatures on each page making Hear Bear Roar an amazing and interactive adventure!

This sound book is special because:

  • Hands on interaction engages young readers
  • Connecting words with pictures builds vocabulary
  • Multisensory reading experiences stimulate the imaginations of young readers
  • Features the amazing art of Eric Carle, writer and illustrator of The Very Hungry Caterpillar
  • Includes an amazing amount of animals: grizzly bear, deer, fox, wolf, dolphin, lobster, wale, blue jay, bee, owl, seagull, bat, spider, woodpecker, monkey, leopard, goat, eagle, polar bear, penguin, walrus, seal, buffalo, horse, elephant, snake, lion, prairie dog, mouse, and a brown bear
The Cat in the Hat's Learning Library
By Dr. Seuss

HarperCollinsChildren'sBooks
Paperback

The Cat in the Hat s Learning Library
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  • Brand New in box. The product ships with all relevant accessories
Product Description:
Learn to read and read to learn, with this classic case from the one and only Dr. Seuss and the Cat in the Hat! An entertaining and educational collection featuring Dr. Seuss's most beloved creation! Come and join the Cat in the Hat in these twenty books jampacked with fantastic facts and fun, and learn about everything from animals to rainforests. Titles included are: A Great Day for Pup Miles and Miles of Reptiles I Can Name 50 Trees Today! My, Oh My - a Butterfly! Would You Rather Be a Tadpole? Oh Say Can You Say What's the Weather Today? One Cent, Two Cents, Old Cent, New Cent A Whale of a Tale Clam-I-am! Inside Your Outside! If I Ran the Rainforest Oh, The Pets You Can Get! There's No Place Like Space! Fine Feathered Friends Oh, The Things You Can Do That Are Good For You! On Beyond Bugs! Oh Say Can You Say Di-no-saur? Wish For a Fish Is a Camel a Mammal? Oh Say Can You Seed? With his unique combination of hilarious stories, zany pictures and riotous rhymes, Dr. Seuss has been delighting young children and helping them learn to read for over fifty years. Creator of the wonderfully anarchic Cat in the Hat, and ranked among the UK's top ten favourite children's authors, Dr. Seuss is a global bestseller, with over half a billion books sold worldwide.
Kaufman Field Guide to Nature of the Midwest (Kaufman Field Guides)
By Kenn Kaufman & Jeff Sayre

Houghton Mifflin Peterson Books
Paperback (416 pages)

Kaufman Field Guide to Nature of the Midwest (Kaufman Field Guides)
List Price: $20.00*
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Product Description:
The only field guide to bring along to identify the birds, mammals, trees, wildflowers, insects, reptiles, amphibians, fish, spiders, mushrooms, ferns, rocks, and sky of the Midwest

Even if we focus on certain things in the outdoors, most of us are curious about everything else that might turn up. Serious birders, botanists, and entomologists all have their specialized guides, but this book is the guide to “everything else"—the one guide to take when you go out for a walk. Wow, that’s a cool-looking mushroom. Wonder what it is. Hey, look at that weird insect.

Birds, mammals, trees, wildflowers, insects, reptiles, amphibians, fish, spiders, mushrooms, ferns, grasses, even constellations overhead and rocks underfoot—it’s all here. With authoritative yet broad coverage, nontechnical language, and more than two thousand color photographs, this book is an essential reference for nature lovers living in or visiting Ohio, Indiana, Illinois, Michigan, Minnesota, Wisconsin, and Iowa.
What Do You Do with a Tail Like This?
By Steve Jenkins

HOUGHTON MIFFLIN
Released: 2008-03-18
Paperback (32 pages)

What Do You Do with a Tail Like This?
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  • What Do You Do With A Tail Like This
Product Description:

A nose for digging? Ears for seeing? Eyes that squirt blood? Explore the many amazing things animals can do with their ears, eyes, mouths, noses, feet, and tails in this interactive guessing book, beautifully illustrated in cut-paper collage, which was awarded a Caldecott Honor.

This title has been selected as a Common Core Text Exemplar (Grades K-1, Read Aloud Informational Text).

Peterson Field Guide to Birds of North America (Peterson Field Guides (Hardcover))
By Roger Tory Peterson

Houghton Mifflin
Black Paperback (544 pages)

Peterson Field Guide to Birds of North America (Peterson Field Guides (Hardcover))
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  • Peterson Field Guide Birds Na
Product Description:
Peterson Field Guide Birds Na
Forerunners of Mammals: Radiation • Histology • Biology (Life of the Past)
Indiana University Press
Released: 2011-11-18
Hardcover (352 pages)

Forerunners of Mammals: Radiation • Histology • Biology (Life of the Past)
List Price: $60.00*
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Product Description:

About 320 million years ago a group of reptiles known as the synapsids emerged and forever changed Earth’s ecological landscapes. This book discusses the origin and radiation of the synapsids from their sail-backed pelycosaur ancestor to their diverse descendants, the therapsids or mammal-like reptiles, that eventually gave rise to mammals. It further showcases the remarkable evolutionary history of the synapsids in the Karoo Basin of South Africa and the environments that existed at the time. By highlighting studies of synapsid bone microstructure, it offers a unique perspective of how such studies are utilized to reconstruct various aspects of biology, such as growth dynamics, biomechanical function, and the attainment of sexual and skeletal maturity. A series of chapters outline the radiation and phylogenetic relationships of major synapsid lineages and provide direct insight into how bone histological analyses have led to an appreciation of these enigmatic animals as once-living creatures. The penultimate chapter examines the early radiation of mammals from their nonmammalian cynodont ancestors, and the book concludes by engaging the intriguing question of when and where endothermy evolved among the therapsids.

THE BOOK OF PREHISTORIC ANIMALS: WHERE THE EXTINCT REPTILES, MAMMAL-LIKE REPTILES, BIRDS, AND MAMMALS CAME FROM
By Raymond L. (illustrated by Helene Carter) Ditmars

J. B. Lippincott Company
Hardcover

THE BOOK OF PREHISTORIC ANIMALS: WHERE THE EXTINCT REPTILES, MAMMAL-LIKE REPTILES, BIRDS, AND MAMMALS CAME FROM
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Mammal-Like Reptiles and the Origin of Mammals
By T. S. Kemp

Academic Pr
Hardcover (363 pages)
List Price: $139.00*
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The mammal-like reptiles of South Africa and the origin of mammals
By Robert Broom

H.F. & G. Witherby
Unknown Binding (376 pages)
 


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