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

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: $25.00* In Stock.* *(As of 13:39 Pacific 31 Mar 2020 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 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 Lowest Used Price: $23.98* In Stock.* *(As of 13:39 Pacific 31 Mar 2020 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

Forerunners of Mammals: Radiation • Histology • Biology (Life of the Past) Indiana University Press Released: November 18th, 2011 Hardcover (352 pages) List Price: $60.00* Lowest New Price: $49.99* Available to ship in 1-2 days.* *(As of 13:39 Pacific 31 Mar 2020 More Info) Click Here Description: Forerunners of Mammals: Radiation • Histology • Biology (Life of the Past) Manufacturer: Indiana University Press ISBN: 0253356970 EAN: 9780253356970 PartNumber: 27 colour illustrations, 78 b&w illustra Details: Hardcover Number of Pages: 352 Publication Date: November 18th, 2011 Release Date: November 18th, 2011 Physical Description: Size: 10.0 Inches by 7.25 Inches by 1.0 Inches Weight: 2.40083403318 Pounds Click here for more information

Who's Like Me? (Flip the Flap and Find Out) By Nicola Davies Candlewick Press Released: February 28th, 2012 Hardcover (24 pages) List Price: $9.99* Lowest Used Price: $6.07* In Stock.* *(As of 13:39 Pacific 31 Mar 2020 More Info) Click Here Description: Who's Like Me? (Flip the Flap and Find Out) Manufacturer: Candlewick Brand: Candlewick Press ISBN: 0763658022 EAN: 9780763658021 Details: Hardcover Edition: Ltf Number of Pages: 24 Author: Nicola Davies Publication Date: February 28th, 2012 Release Date: February 28th, 2012 Physical Description: Size: 9.17 Inches by 9.1 Inches by 0.38 Inches Weight: 0.78 Pounds Click here for more information

What Do You Do with a Tail Like This? By Steve Jenkins HMH Books for Young Readers Released: March 18th, 2008 Paperback (32 pages) List Price: $7.95* Lowest New Price: $6.29* In Stock.* *(As of 13:39 Pacific 31 Mar 2020 More Info) Click Here Description: What Do You Do with a Tail Like This? Manufacturer: HMH Books for Young Readers Brand: HMH Books for Young Readers ISBN: 061899713X EAN: 9780618997138 PartNumber: 9780618997138 Details: Paperback Edition: Reprint Number of Pages: 32 Authors: Steve Jenkins, Robin Page Publication Date: March 18th, 2008 Release Date: March 18th, 2008 Physical Description: Size: 9.75 Inches by 9.75 Inches by 0.12 Inches Weight: 0.35 Pounds Features: 9780618997138 Click here for more information

National Geographic Little Kids First Big Book of Science (National Geographic Kids) By Kathleen Weidner Zoehfeld National Geographic Children's Books Released: March 26th, 2019 Hardcover (128 pages) List Price: $14.99* Lowest New Price: $11.39* In Stock.* *(As of 13:39 Pacific 31 Mar 2020 More Info) Click Here Description: National Geographic Little Kids First Big Book of Science (National Geographic Kids) Manufacturer: National Geographic Children's Books ISBN: 1426333188 EAN: 9781426333187 PartNumber: unknown Details: Hardcover Edition: edition Number of Pages: 128 Author: Kathleen Weidner Zoehfeld Publication Date: March 26th, 2019 Release Date: March 26th, 2019 Physical Description: Size: 10.19 Inches by 10.19 Inches by 0.56 Inches Weight: 1.6314207388 Pounds 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 Released: October 28th, 2017 Paperback (74 pages) Lowest New Price: $9.57* Temporarily out of stock. Order now and we'll deliver when available. We'll e-mail you with an estimated delivery date as soon as we have more information. Your account will only be charged when we ship the item.* *(As of 13:39 Pacific 31 Mar 2020 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: 1528416236 EAN: 9781528416238 Details: Paperback Number of Pages: 74 Author: Vanderbilt Marine Museum Publication Date: October 28th, 2017 Release Date: October 28th, 2017 Physical Description: Size: 9.01573 Inches by 5.98424 Inches by 0.1531493 Inches Weight: 0.24030386558 Pounds Click here for more information

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