Ianthasaurus

Ianthasaurus Temporal range: Late Carboniferous, ~304 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Life restoration
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Family:	†Edaphosauridae
Genus:	†Ianthasaurus Reisz and Berman, 1986
Type species
†Ianthasaurus hardestii Reisz & Berman, 1986

Ianthasaurus is an extinct genus of small edaphosaurids from the Late Carboniferous.

Description

Size comparison

It is one of the smallest edaphosaurids known, with an 8 cm (3.1 in) skull and a total body length of 75 cm (30 in).[1] Ianthasaurus lacks many of the spectacular specializations seen in Edaphosaurus. For example, the marginal dentition of Ianthasaurus is similar to that of insectivorous reptiles, with slender conical teeth which are slightly recurved at the tips, and there is a slight development of a caniniform region. The palatal and mandibular dentition is unspecialized, and there are no batteries of teeth for crushing of plant materials. Also unlike Edaphosaurus, Ianthasaurus was lightly built and was probably quite agile. The skull was similar to that of Haptodus, a sphenacodontid, though they were distantly related.

Discovery

It was named by Robert R. Reisz and David Berman in 1986.[2][3] It was discovered by them in the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas.[2]

See also

• List of pelycosaurs

References

1. T.S. Kemp (2005) The origin and evolution of mammals p.24.
2. Robert R. Reisz and David S. Berman (1986). "Ianthasaurus hardestii n. sp., a primitive edaphosaur (Reptilia, Pelycosauria) from the Upper Pennsylvanian Rock Lake Shale near Garnett, Kansas". Canadian Journal of Earth Sciences. 23 (1): 77–91. Bibcode:1986CaJES..23...77R. doi:10.1139/e86-008.
3. "Ianthasaurus". Paleobiology Database. Archived from the original on October 2, 2013. Retrieved December 11, 2007.