Eothyris

E-oh-fy-riss.
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Emerson Winslow

Paleoichthyologist

Emerson Winslow delves into the underwater world of prehistoric fish, uncovering the mysteries of early marine life. His discoveries have enhanced understanding of vertebrate evolution in aquatic environments.

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Name

Eothyris.

Phonetic

E-oh-fy-riss.

Named By

A.‭ ‬S.‭ ‬Romer‭ ‬-‭ ‬1937.

Classification

Chordata,‭ ‬Synapsida,‭ ‬Pelycosauria,‭ ‬Caseasauria,‭ ‬Eothyrididae.

Diet

Insectivore.

Species

E.‭ ‬parkeyi

Size

Skull‭ ‬5.7‭ ‬centimetres long,‭ ‬total body length estimated about‭ ‬30‭ ‬centimetres long.

Known locations

USA,‭ ‬Texas‭ ‬-‭ ‬Belle Plains Formation.

Time Period

Artinskian of the Permian.

Fossil representation

Skull.

In Depth

       Eothyris is currently only known from a skull,‭ ‬but from this a little can be inferred about the lifestyle of this genus.‭ ‬The mouth was filled with sharp and pointed teeth,‭ ‬with a pair of enlarged fangs that were near the front of the upper jaw.‭ ‬These were likely used to snare and trap prey such as larger insects which would have been easily impaled upon such teeth.‭ ‬Eothyris has been considered to be a relative Oedaleops,‭ ‬which is why the two genera are often included‭ ‬together‭ ‬within the Eothyrididae.

Further Reading

-‭ ‬New genera and species of pelycosaurian reptiles.‭ ‬-‭ ‬Proceedings of the New England Zo�logical Club‭ ‬16:89-95.‭ ‬-‭ ‬A.‭ ‬S.‭ ‬Romer‭ ‬-‭ ‬1937. -‭ ‬Eothyris and Oedaleops:‭ ‬Do these Early Permian synapsids from Texas and New Mexico form a clade‭? ‬-‭ ‬Journal of Vertebrate Paleontology‭ ‬29:‭ ‬39.‭ ‬-‭ ‬R.‭ ‬R.‭ ‬Reisz,‭ ‬S.‭ ‬J.‭ ‬Godfrey‭ & ‬D.‭ ‬Scott‭ ‬-‭ ‬2009.

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