Thomasia (animal)

"Microlestes antiquus" redirects here. For genus of beetles, see Microlestes.

Thomasia Temporal range: Rhaetian-Hettangian ~206–189 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Molariforms of Thomasia cf. moorei
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Mammaliaformes
Order:	†Haramiyida
Family:	†Haramiyidae
Genus:	†Thomasia Poche, 1908
Type species
†Microlestes antiquus 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

Thomasia is a mammaliaform from the family Haramiyidae.^[1] from the Late Triassic of Europe. It is only known from teeth.^[2]

Distribution

Fossils of the genus have been found in:^[3]

Triassic

• Sables and Grès de Mortinsart Formations, Gaume, Belgium
• Microlestes Quarry, Frome, England
• Exter and Trossingen Formations, Germany
• Auf dem Heftgen, Syren, Luxembourg
• Klettgau Formation, Switzerland
• Gres à Avicula contorta Formation, Franche-Comté and Lorraine, France

Jurassic

• Pant Fissure System 4, Pant Quarry, St Brides Major (community), Wales

References

1. http://palaeos.com/vertebrates/mammaliformes/mammaliformes.html#Haramiyida Palaeos on Haramiya
2. 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.
3. Thomasia at Fossilworks.org