Edops
| Edops | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Order: | †Temnospondyli |
| Superfamily: | †Edopoidea |
| Family: | †Edopidae Langston, 1953 |
| Genus: | †Edops Romer and Witter, 1936 |
| Type species | |
| †Edops craigi Romer and Witter, 1936
| |
Edops ('swollen face') is an extinct
temnospondyl amphibian from the Late Carboniferous - Early Permian periods.[1] Unlike more advanced temnospondyls of the time, such as Eryops, Edops exhibited an archaic pattern of palatal bones, and still possessed various additional bones at the back of the skull. Edopoids also had particularly big premaxillae (the bones that form the tip of the snout) and proportionally small external nostrils. Within the clade, the most basal member seems to be Edops from the Early Permian Archer City Formation
of the US, a broad-skulled animal with large palatal teeth.
Edops was fairly big, at 2 metres (6.6 ft) in length. Fragmentary remains from the Viséan of Scotland appear to come from Edops or a close relative and hence predate the type Edops material of the Permian.[2]
Discovery and naming
The American paleontologist
Alfred Sherwood Romer named Edops "swollen face" (from Greek oidos "swelling" and Greek ops "face") in 1936, noting that the "premaxillaries are greatly thickened and produced externally into rounded swellings (whence the generic name)."[3] (The Latinized spelling "edo" for "oidos" resembles the Latin word edo meaning a glutton, but this is not the formal etymology.) In a 1943 popular article, Romer explained that the original fossil find was nicknamed "Grandpa Bumps" for the lumps of bone, which had survived while the rest of the first skull had been largely destroyed.[4] Romer and his preparator R. V. Witter from Harvard University described Edops in more detail from additional fossil material in 1942.[5]
Phylogeny
Edops craigi in a cladogram after Steyer et. al., 2006:[6]
| Edopoidea |
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References
- ^ "†Edops Romer 1936 (tetrapod)". Paleobiology Database. Retrieved 2024-01-31.
- ^ "Edopoidea". Archived from the original on 2023-09-23.
- ^ HARTMANN-WEINBERG, А. (1936-06-03). Проблемы палеонтологии: PROBLEMS OF PALEONTOLOGY. Alexander Doweld.
- ^ Cattell J. Mckeen (1943). The Scientific Monthly Vol-lvii (1943).
- ISSN 0022-1376.
- doi:10.1671/0272-4634(2006)26[18:TVFOTU]2.0.CO;2.)
{{cite journal}}: CS1 maint: multiple names: authors list (link
Further reading
- Ruta, M., Pisani, D., Lloyd, G. T. and Benton, M. J. 2007. A supertree of Temnospondyli: cladogenetic patterns in the most species-rich group of early tetrapods. Proceedings of the Royal Society B-Biological Sciences 274: 3087-3095
