Notidanodon

{{Short description|Extinct genus of Cow shark}} {{Italic title}} {{Automatic taxobox | fossil_range = {{fossilrange|Tithonian|Thanetian}} | taxon = Notidanodon | authority = Cappetta, 1975 | subdivision_ranks = Species | subdivision = *''N. pectinatus '' *''N. lanceolatus'' }}

'''''Notidanodon''''' is an extinct [[genus]] of [[cow shark]]. Fossils ascribed to this genus are known from the [[Jurassic]] and [[Cretaceous]] periods. Recently, the genus underwent a major revision and was split into two after the erection of ''Xampylodon'' to accommodate the species ''X. dentatus'', ''X. loozi'', and ''X. brotzeni''.<ref>{{Cite journal|last1=Cappetta|first1=Henri|last2=Morrison|first2=Kurt|last3=Adnet|first3=Sylvain|date=2021-12-10|title=A shark fauna from the Campanian of Hornby Island, British Columbia, Canada: an insight into the diversity of Cretaceous deep-water assemblages|journal=Historical Biology|volume=33|issue=8|pages=1121–1182|doi=10.1080/08912963.2019.1681421|bibcode=2021HBio...33.1121C |s2cid=212878837 |issn=0891-2963}}</ref> The genus is now known only from New Zealand, Antarctica, Africa, and South America.<ref>{{Cite web|title=Fossilworks: Notidanodon|url=https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=34528|access-date=17 December 2021|website=fossilworks.org}}</ref>

== Species == The earliest occurrences of attributed specimens are from the [[Tithonian]] of New Zealand, and the latest are from the [[Maastrichtian]] of Antarctica. Currently, only two [[Mesozoic]] species, ''Notidanodon pectinatus'' and ''Notidanodon lanceolatus'', are attributed to the genus. A putative third species, ''Notidanodon antarcti'', appears only in the caption of Figure 2 in Grande and Chatterjee (1987), but the same material was treated as ''Notidanodon'' sp. in the main text. Later, ''N. antarcti'' was considered a ''nomen dubium'' and regarded as a junior synonym of ''Notidanodon pectinatus''.<ref>{{Cite journal|last1=Cappetta|first1=Henri|last2=Grant-Mackie|first2=Jack|date=2018-09-21|title=Discovery of the most ancient Notidanodon tooth (Neoselachii: Hexanchiformes) in the Late Jurassic of New Zealand. New considerations on the systematics and range of the genus|journal=Palaeovertebrata|volume=42|issue=1|pages=e1|doi=10.18563/pv.42.1.e1|s2cid=92722893 |issn=0031-0247}}</ref>

== References == {{Reflist}}

[[Category:Prehistoric shark genera]] [[Category:Hexanchidae]] [[Category:Cretaceous sharks]]