Asaphestera is an extinct genus of a tetrapod described on the basis of fossils from the Carboniferous of the Joggins locality in Nova Scotia, Canada. It was originally described as an undetermined lepospondyl[1] and subsequently classified as a microsaur within the familyTuditanidae.[2] A study published in May 2020 found that specimens referred to Asaphestera represented several unrelated species. Steen (1934)'s original species name Asaphestera platyris was retained for a skull which has been re-evaluated as the earliest known synapsid.[1][3]
The type species of Asaphestera is Asaphestera platyris, named by Steen (1934) based on three skulls. Carroll & Gaskill (1978) noted that one of the skulls was briefly named as the species "Hylerpeton" intermedium by Dawson (1894), though it is no longer consider related to the genus Hylerpeton. According to Dawson's species name, they renamed Asaphestera platyris to Asaphestera intermedia.[4]
Mann et al. (2020) re-evaluated purported Joggins microsaurs and found several unusual results. One of the skulls assigned the name Asaphestera platyris by Steen appeared to be a valid taxon, but instead of a microsaur it was the oldest known synapsid, possibly an eothyridid. Dawson's "Hylerpeton" intermedium was determined to be an indeterminate tetrapod and a nomen dubium. Additional Asaphestera material was named as a new genus of microsaur, Steenerpeton.[3]
Referencesedit
^ abSteen, Margaret C. (1934). "The amphibian fauna from the South Joggins. Nova Scotia". Journal of Zoology. 104 (3): 465–504. doi:10.1111/j.1096-3642.1934.tb01644.x.
^"†Asaphestera Steen 1934". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
^ abMann, Arjan; Gee, Bryan M.; Pardo, Jason D.; Marjanović, David; Adams, Gabrielle R.; Calthorpe, Ami S.; Maddin, Hillary C.; Anderson, Jason S. (5 May 2020). Sansom, Robert (ed.). "Reassessment of historic 'microsaurs' from Joggins, Nova Scotia, reveals hidden diversity in the earliest amniote ecosystem". Papers in Palaeontology. Wiley. doi:10.1002/spp2.1316. ISSN 2056-2802.
^Carroll, Robert L.; Gaskill, Pamela (1978). "The Order Microsauria". Memoirs of the American Philosophical Society. 126: 1–211.
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asaphestera, extinct, genus, tetrapod, described, basis, fossils, from, carboniferous, joggins, locality, nova, scotia, canada, originally, described, undetermined, lepospondyl, subsequently, classified, microsaur, within, family, tuditanidae, study, published. Asaphestera is an extinct genus of a tetrapod described on the basis of fossils from the Carboniferous of the Joggins locality in Nova Scotia Canada It was originally described as an undetermined lepospondyl 1 and subsequently classified as a microsaur within the family Tuditanidae 2 A study published in May 2020 found that specimens referred to Asaphestera represented several unrelated species Steen 1934 s original species name Asaphestera platyris was retained for a skull which has been re evaluated as the earliest known synapsid 1 3 AsaphesteraTemporal range Carboniferous 318 1 314 6 Ma PreꞒ Ꞓ O S D C P T J K Pg N Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClade SynapsidaGenus AsaphesteraSteen 1934Type species Asaphestera platyrisSteen 1934The type species of Asaphestera is Asaphestera platyris named by Steen 1934 based on three skulls Carroll amp Gaskill 1978 noted that one of the skulls was briefly named as the species Hylerpeton intermedium by Dawson 1894 though it is no longer consider related to the genus Hylerpeton According to Dawson s species name they renamed Asaphestera platyris to Asaphestera intermedia 4 Mann et al 2020 re evaluated purported Joggins microsaurs and found several unusual results One of the skulls assigned the name Asaphestera platyris by Steen appeared to be a valid taxon but instead of a microsaur it was the oldest known synapsid possibly an eothyridid Dawson s Hylerpeton intermedium was determined to be an indeterminate tetrapod and a nomen dubium Additional Asaphestera material was named as a new genus of microsaur Steenerpeton 3 References edit a b Steen Margaret C 1934 The amphibian fauna from the South Joggins Nova Scotia Journal of Zoology 104 3 465 504 doi 10 1111 j 1096 3642 1934 tb01644 x Asaphestera Steen 1934 Paleobiology Database Fossilworks Retrieved 17 December 2021 a b Mann Arjan Gee Bryan M Pardo Jason D Marjanovic David Adams Gabrielle R Calthorpe Ami S Maddin Hillary C Anderson Jason S 5 May 2020 Sansom Robert ed Reassessment of historic microsaurs from Joggins Nova Scotia reveals hidden diversity in the earliest amniote ecosystem Papers in Palaeontology Wiley doi 10 1002 spp2 1316 ISSN 2056 2802 Carroll Robert L Gaskill Pamela 1978 The Order Microsauria Memoirs of the American Philosophical Society 126 1 211 nbsp This Synapsida related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Asaphestera amp oldid 1115423069, wikipedia, wiki, book, books, library,
