Acleistorhinus

Acleistorhinus Temporal range:
Reconstructed skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	†Ankyramorpha
Family:	†Acleistorhinidae
Genus:	†Acleistorhinus Daly, 1969
Type species
†Acleistorhinus pteroticus Daly, 1969

Acleistorhinus is an extinct genus of acleistorhinid stem-reptile known from the Early Permian (middle Kungurian stage) Hennessey Formation of Oklahoma. The genus contains a single species, Acleistorhinus pteroticus.

Discovery and naming

Acleistorhinus was described by Eleanor Daly in 1969, based on fossils found in the Early Permian outcrops of the Hennessey Formation in South Grandfield of southwestern Oklahoma.

The name Acleistorhinus combines Greek rhin (ῥῑ́ν), meaning "nose," and akleistos, Greek for "unclosed."

Classification

The placement of Acleistorhinus in relation to other acleistorhinids within Ankyramorpha is shown in the cladogram below:

†Ankyramorpha	†Acleistorhinidae †Acleistorhinus †Feeserpeton †Colobomycter †Delorhynchus †Procolophonia †Pareiasauromorpha †Procolophonoidea

See also

• Macroleter
• Lanthanosuchidae
• Parareptilia

Further reading

• Debraga, Michael; Reisz, Robert R. (September 1996). "The Early Permian reptile Acleistorhinus pteroticus and its phylogenetic position". Journal of Vertebrate Paleontology. 16 (3): 384–395. doi:10.1080/02724634.1996.10011328. ISSN 0272-4634.