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Mammal-like Reptiles
| Scientific Classification |
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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
Related Information & Resources
See Also
Mammal-like Reptile Books
Here are some books from Amazon.com:
Disclosure: Products details and descriptions provided by Amazon.com. Our company may receive a payment if you purchase products from them after following a link from this website.
By T. S. Kemp
Academic Press
Hardcover (363 pages)
| List Price: $139.00*
Lowest Used Price: $174.94*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Raymond L. (illustrated by Helene Carter) Ditmars
J. B. Lippincott Company
Hardcover
| Lowest Used Price: $75.00*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Paul D. MacLean & E. Carol Roth
Smithsonian
Paperback (326 pages)
| List Price: $22.50*
Lowest Used Price: $33.25*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Hopson
Yale
Pamphlet
| Lowest Used Price: $75.00*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here | Product Description:
30 pages. |
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By Robert Broom
H.F. & G. Witherby
Unknown Binding (376 pages)
| Lowest Used Price: $495.00*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Everett C Olson
J Geol
Unknown Binding
| Lowest Used Price: $6.90*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Editor.
The University of Chicago Press
Paperback
| Lowest Used Price: $13.00*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Colbert Edwin H.
American Museum of Natural History ( AMNH )
Unknown Binding
| Lowest Used Price: $23.00*
*(As of 14:35 Pacific 2 Sep 2010 More Info)
Click Here |
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By Edwin Harris Colbert
[American Museum of Natural History]
Unknown Binding (404 pages)
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By Robert Broom
Published by order of the Trustees, American Museum of Natural History
Unknown Binding
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