Arius, VALENCIENNES, 1840
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.11474206 |
persistent identifier |
https://treatment.plazi.org/id/2B4F878B-256D-FF97-FEE5-FE96FF05FA5C |
treatment provided by |
Felipe |
scientific name |
Arius |
status |
|
ARIUS VALENCIENNES, 1840 View in CoL
ARIUS? SUBTILIS SCHWARZHANS AND BRATISHKO, 2011
FIG. 6C View Figure 6
Material— one well preserved specimen, DMNH 2021-09-11.
Description and Remarks— Arius? subtilis is represented by the utricular otolith or lapillus rather than the sagitta. The lapillus is oval in outline (sensu Smale et al. 1995) and has characteristically smooth margins except for one diagnostic projection. It is typically plano-convex and usually fairly thin. The flat side often has radial growth lines visible, especially in eroded specimens. In some specimens, a very lightly impressed sulcal area may be visible on the convex side. Arius? subtilis was first identified in the Paleocene of the Ukraine by Schwarzhans and Bratishko (2011) and is fairly common in the early Paleocene of Europe ( Schwarzhans 2012). It is also known from the Clayton Formation (early Paleocene) of the USA ( Schwarzhans and Stringer 2020a). However, its range was extended to the Late Cretaceous when it was reported from the Ripley and Owl Creek formations of Mississippi (Stringer et al. 2020), where it was abundant (125 specimens from the two formations). It also occurs in the Coon Creek Formation in Tennessee (as Ariidae indeterminate in Stringer 2016b) and in the Kemp Clay (upper Maastrichtian) of northeast Texas, where it was very abundant with 195 specimens ( Schwarzhans and Stringer 2020a). The rarity of Arius? subtilis in the stratigraphically equivalent Arkadelphia Formation is enigmatic.
DMNH |
Delaware Museum of Natural History |
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