Thomasia (mammal)

Thomasia is a mammaliform from the Haramiyidae that is part of a lineage either unrelated to or a paraphyletic parent to multituberculates[1] from the Early Jurassic period.

Thomasia Temporal range: Early Jurassic, 201–189 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Haramiyida
Family:	†Haramiyidae
Genus:	†Thomasia Poche, 1908
Type species
†Thomasia antiqua Pleininger, 1847
Species
†T. antiqua Plieninger, 1847 †T. hahni Butler & Macintyre, 1994 †T. moorei Owen, 1871 †T. woutersi Butler & Macintyre, 1994
Synonyms
Haramiya Simpson, 1947 Microcleptes Simpson, 1928 Microlestes Plieninger, 1847 Pleiningeria Krausse, 1919

Only Thomasia's teeth and skull have been found; judging from these it has been constructed as a 12 cm (5 in) creature with a resemblance to modern voles. It is presumed to have fed on the leaves of tree ferns, as it had broad cheek teeth for crushing tough vegetable food.[2][3]

References

1. http://palaeos.com/vertebrates/mammaliformes/mammaliformes.html#Haramiyida Palaeos on Haramiya
2. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 199. ISBN 1-84028-152-9.
3. Zofia Kielan-Jaworowska, Richard L. Cifelli, and Zhe-Xi Luo, Mammals from the Age of Dinosaurs: Origins, Evolution, and Structure (New York: Columbia University Press, 2004), 249–260.