Mammal-like Reptiles

• 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

Related Information & Resources

• Prehistoric Animals - Prehistoric and Extinct Animals

Mammal-like Reptile Books

Mammal-Like Reptiles and the Origin of Mammals By T. S. Kemp Academic Pr Hardcover (363 pages) List Price: $139.00* Lowest Used Price: $88.03* In stock. Usually ships within 3 to 4 days.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: Mammal-Like Reptiles and the Origin of Mammals Manufacturer: Academic Pr ISBN: 0124041205 EAN: 9780124041202 Details: Hardcover Number of Pages: 363 Author: T. S. Kemp Click here for more information

Ecology and Biology of Mammal-Like Reptiles By Paul D. MacLean & E. Carol Roth Smithsonian Released: December 17th, 1986 Paperback (326 pages) Lowest Used Price: $35.00* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: Ecology and Biology of Mammal-Like Reptiles Manufacturer: Smithsonian ISBN: 0874745195 EAN: 9780874745191 Details: Paperback Edition: 1st Edition Number of Pages: 326 Authors: Paul D. MacLean, Jan J. Roth, E. Carol Roth Publication Date: December 17th, 1986 Release Date: December 17th, 1986 Physical Description: Size: 11.0 Inches by 8.25 Inches by 0.75 Inches Weight: 2.11202846996 Pounds Click here for more information

The Mammal-like Reptile Lycaenops. By E.H. Colbert Am.Mus.N.H.Bul.89 Paperback Lowest Used Price: $11.00* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: The Mammal-like Reptile Lycaenops. Manufacturer: Am.Mus.N.H.Bul.89 Details: Paperback Edition: 1st Edition Author: E.H. Colbert Click here for more information

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 List Price: $20.01* Lowest Used Price: $10.46* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: THE BOOK OF PREHISTORIC ANIMALS: WHERE THE EXTINCT REPTILES, MAMMAL-LIKE REPTILES, BIRDS, AND MAMMALS CAME FROM Manufacturer: J. B. Lippincott Company Details: Hardcover Edition: no statement of edition Author: Raymond L. (illustrated by Helene Carter) Ditmars Physical Description: Weight: 1.01 Pounds Click here for more information

The Locomotor Apparatus of Certain Primitive and Mammal-Like Reptiles [Bulletin of The American Museum of Natural History Vol. XLVI, Art. X, pp. 517-606] By Alfred Sherwood Romer The American Museum of Natural History Paperback Lowest Used Price: $30.00* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: The Locomotor Apparatus of Certain Primitive and Mammal-Like Reptiles [Bulletin of The American Museum of Natural History Vol. XLVI, Art. X, pp. 517-606] Manufacturer: The American Museum of Natural History Details: Paperback Author: Alfred Sherwood Romer Click here for more information

Catalogue of Fish, Fish-Like Mammals and Amphibian Reptiles: Hall of Fishes, Vanderbilt Marine Museum (Classic Reprint) By Vanderbilt Marine Museum Forgotten Books Hardcover (74 pages) Lowest New Price: $26.50* Usually ships within 6 to 7 days.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: Catalogue of Fish, Fish-Like Mammals and Amphibian Reptiles: Hall of Fishes, Vanderbilt Marine Museum (Classic Reprint) Manufacturer: Forgotten Books ISBN: 0266898424 EAN: 9780266898429 Details: Hardcover Number of Pages: 74 Author: Vanderbilt Marine Museum Physical Description: Size: 9.0 Inches by 6.0 Inches by 0.25 Inches Weight: 0.55997414548 Pounds Click here for more information

What Do You Do with a Tail Like This?: A Caldecott Honor Award Winner (Caldecott Honor Book) By Steve Jenkins Houghton Mifflin Books for Children Released: March 25th, 2003 Hardcover (32 pages) Lowest New Price: $17.99* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: What Do You Do with a Tail Like This?: A Caldecott Honor Award Winner (Caldecott Honor Book) Manufacturer: Clarion Books Brand: Houghton Mifflin Books for Children ISBNs: 0439703840, 0618256288 UPC: 046442256285 EANs: 0046442256285, 9780439703840, 9780618256280 PartNumber: 9780618256280 Details: Hardcover Format: Picture Book Edition: Illustrated Number of Pages: 32 Authors: Steve Jenkins, Robin Page Publication Date: March 25th, 2003 Release Date: March 25th, 2003 Physical Description: Size: 9.75 Inches by 9.75 Inches by 0.331 Inches Weight: 0.93 Pounds Features: Hardcover Click here for more information

Eyelike Stickers: Animals By Workman Publishing Workman Publishing Company Released: November 4th, 2011 Multicolor Paperback (12 pages) Lowest New Price: $6.95* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: Eyelike Stickers: Animals Manufacturer: Workman Publishing Company Brand: Workman Publishing Company Model: 9780761169338 ISBN: 0761169334 UPC: 783324921045 EAN: 9780761169338 PartNumber: WMP076116938 Details: Paperback Format: Sticker Book Number of Pages: 12 Author: Workman Publishing Publication Date: November 4th, 2011 Release Date: November 4th, 2011 Physical Description: Size: 10.375 Inches by 8.875 Inches by 0.125 Inches Weight: 173.0 Grams Color: Multicolor Click here for more information

Carson Dellosa Animal Flash Cards, Animal Flash Cards for Toddlers 2-4 Years, Zoo Animals, Sea Animals, Insects, Reptiles, and Other Mammals, Preschool and Kindergarten Flash Cards Brighter Child Released: May 16th, 2019 Multi Cards (54 pages) Lowest New Price: $2.99* Available to ship in 1-2 days.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: Carson Dellosa Animal Flash Cards, Animal Flash Cards for Toddlers 2-4 Years, Zoo Animals, Sea Animals, Insects, Reptiles, and Other Mammals, Preschool and Kindergarten Flash Cards Manufacturer: Brighter Child Brand: Brighter Child Model: CD-734090 ISBN: 1483852822 UPC: 044222274405 EANs: 9781483852829, 0044222274405 PartNumber: CD-734090 Details: Product Category: Cards Number of Pages: 54 Publication Date: May 16th, 2019 Release Date: May 16th, 2019 Physical Description: Size: 0.95 Inches by 5.2 Inches by 3.4 Inches Weight: 0.440924524 Pounds Color: Multi Features: Help children practice and master important skills with a hands-on, interactive format Designed to teach curious young learners facts about a variety of animals Set features full-color photographs of each animal These durable cards are perfect for learning at school, at home, or on the go Click here for more information

National Geographic Pocket Guide to Reptiles and Amphibians of North America By Catherine H. Howell NATIONAL GEOGRAPHIC Released: March 31st, 2015 Paperback (176 pages) Lowest New Price: $12.59* In Stock.* *(As of 01:00 Pacific 26 Jan 2023 More Info) Click Here Description: National Geographic Pocket Guide to Reptiles and Amphibians of North America Manufacturer: National Geographic Brand: NATIONAL GEOGRAPHIC ISBN: 1426214766 EAN: 9781426214769 PartNumber: BK26214769 Details: Paperback Format: Illustrated Edition: Illustrated Number of Pages: 176 Author: Catherine H. Howell Publication Date: March 31st, 2015 Release Date: March 31st, 2015 Physical Description: Size: 7.25 Inches by 4.25 Inches by 0.5 Inches Weight: 0.4 Pounds Features: Pocket Guide to Reptiles and Amphibians of North A Pocket Guide to Reptiles and Amphibians of North A National Geographic Maps Click here for more information

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