Xyrospondylus

Xyrospondylus is an extinct genus of non-mammalian synapsids belonging to the Edaphosauridae.[1][2] The type species, X. ecordi,[3] was named in 1982;[4] it was originally named as a species of Edaphosaurus in 1957.[5]

Xyrospondylus
Temporal range: Late Carboniferous, Pennsylvanian (Missourian)
~302 Ma
↓
Holotype cervical vertebra at the University of California Museum of Paleontology
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Synapsida
Family:
†Edaphosauridae
Genus:
†Xyrospondylus

Reisz, Heaton & Pynn, 1982
Type species
†Xyrospondylus ecordi
Reisz, Heaton & Pynn, 1982 (Peabody, 1957)
Synonyms

It lived during the Pennsylvanian (Missourian) in Kansas and possibly also Colorado[6] and the holotype is known from a single cervical vertebra found in the Stanton Formation. A second specimen, consisting of a fragmentary pelvis, is also known. A third specimen, known from Colorado, is known, but it probably does not pertain to Xyrospondylus.

See also

References
  1. R. R. Reisz. 1986. Pelycosauria. Handbuch der Paläoherpetologie / Encyclopedia of Paleoherpetology 17A:1-102 [J. Mueller/J. Dummasch/T. Liebrecht]
  2. The main groups of non-mammalian synapsids at Mikko's Phylogeny Archive
  3. "Xyrospondylus". Paleofile. Retrieved 21 May 2015.
  4. R. R. Reisz, M. J. Heaton, and B. R. Pynn. 1982. Vertebrate Fauna of Late Pennsylvanian Rock Lake Shale near Garnett, Kansas: Pelycosauria. Journal of Paleontology 56(3):741-750
  5. F. E. Peabody. 1957. Pennsylvanian Reptiles of Garnett, Kansas: Edaphosaurs. Journal of Paleontology 31(5):947-949 [J. Mueller/T. Liebrecht]
  6. R. L. Carroll. 1988. Vertebrate Paleontology and Evolution 1-698 [A. Behrensmeyer/A. Behrensmeyer/M. Uhen]


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