Acleistorhinus
| Acleistorhinus Temporal range: | |
|---|---|
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| 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.[1]
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:[2]
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See also
References
- ↑ Daly, Eleanor (1969). "A new procolophonoid reptile from the Lower Permian of Oklahoma". Journal of Paleontology. 43 (3): 676–687.
- ↑ Jenkins, Xavier A.; Benson, Roger B. J.; Ford, David P.; Browning, Claire; Fernandez, Vincent; Dollman, Kathleen; Gomes, Timothy; Griffiths, Elizabeth; Choiniere, Jonah N.; Peecook, Brandon R. (2025-08-28). "Evolutionary assembly of crown reptile anatomy clarified by late Paleozoic relatives of Neodiapsida". Peer Community Journal. 5. e89. doi:10.24072/pcjournal.620. ISSN 2804-3871.
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.





