Barbclabornia

Barbclabornia is an extinct genus of xenacanth shark from the Early Permian and possibly upper Pennsylvanian of North America. It is named for Barbara Claborn who discovered a palatoquadrate allowing the genus to be described and Alvie Claborn who helped prepare it. The genus contains a single described species: B. luedersensis. It was originally placed in the genus Xenacanthus prior to the description of an associated dentition. It is believed to be closely related to Triodus. It was likely a mainly freshwater shark with a size much larger than its relatively small teeth would suggest. It is currently known only from North America but has been found in many places with Asselian and Atinskian formations including the Clear Fork, Albany, Wichita, and Dunkard Groups. There are possible examples from the Gzhelian-aged Admire, Monongahela, and Conemaugh groups.[1][2]

Barbclabornia Temporal range: Asselian – Artinskian PreꞒ Ꞓ O S D C P T J K Pg N
Barbclabornia leudersensis teeth from the Permian of Oklahoma
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	Xenacanthiformes
Family:	Xenacanthidae
Genus:	Barbclabornia Johnson, 2003

References

1. Johnson, G. (2003). Dentitions of Barbclabornia (new genus, Chondrichthyes: Xenacanthiformes) from the Upper Palaeozoic of North America. Fossil Record, 6, 125-146.
2. "Fossilworks: Barbclabornia". fossilworks.org. Retrieved 2020-10-04.