Protobythites brzobohatyi, SCHWARZHANS, 2010

Stringer, Gary L. & Sloan, James Carson, 2023, First Cretaceous teleostean otolith assemblage (Arkadelphia Formation, upper Maastrichtian) from Arkansas, USA, early Gadiformes, and the Western Interior Seaway, PaleoBios 40 (1994), pp. 1-39 : 19

publication ID

https://doi.org/ 10.5070/P940361192.

publication LSID

lsid:zoobank.org:pub:3B70D32F-9BF0-4595-AF4B-45ADEE03B204

DOI

https://doi.org/10.5281/zenodo.11474242

persistent identifier

https://treatment.plazi.org/id/2B4F878B-2574-FF8E-FF50-FA1CFC2DFDC3

treatment provided by

Felipe

scientific name

Protobythites brzobohatyi
status

 

PROTOBYTHITES BRZOBOHATYI SCHWARZHANS, 2010

FIG. 8H View Figure 8

Material— four specimens, specimen figured, DMNH 2021-09- 30 About DMNH . About DMNH

Description and Remarks— The four Arkadelphia Formation otoliths assigned to Protobythites brzobohatyi are similar to Ampheristus , but they are distinguished from Ampheristus in the inner face being distinctly convex in both the horizontal and vertical directions. Protobythites brzobohatyi also has a relatively smooth inner face except for the slightly deepened sulcus (especially the cauda). The sulcus has a wide, long ostium and a short, flexed, narrow cauda. There is a very shallow dorsal depression present and a faint ventral furrow on the inner face. The margins are sharp. Protobythites brzobohatyi has a thin appearance with a nearly flat outer face. The species was based on a single well-preserved otolith from the Maastrichtian of Bavaria ( Schwarzhans 2010). It is also known from the Maastrichtian Kemp Clay of Texas ( Schwarzhans and Stringer 2020a). Its occurrence is now extended to the Maastrichtian Arkadelphia Formation of Arkansas.

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