Balsam Fir – Abies balsamea

by | Dec 12, 2023 | NE Native Trees

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Priscosturion is a genus of sturgeon from the Judith River Formation. It lived during the Campanian stage of the Late Cretaceous some 77.5 million years ago. Initially called Psammorhynchus, its describers Lance Grande and Eric J. Hilton renamed the animal in 2009. The fish belongs to the subfamily Priscosturioninae within the larger family Acipenseridae.[2] Priscosturion is only known from one species, P. longipinnis.

Description

Priscosturion was around 800 millimetres (31 in) in overall length. Its type specimen is rather complete. It is notable for its rather robust vertebrae.[3]

References

  1. ^ Rodgers, Raymond (2016). "Age, Correlation, and Lithostratigraphic Revision of the Upper Cretaceous (Campanian) Judith River Formation in Its Type Area (North-Central Montana), with a Comparison of Low- and High-Accommodation Alluvial Records". The Journal of Geology. 124 (1): 99–135. Bibcode:2016JG....124...99R. doi:10.1086/684289. S2CID 130555911.
  2. ^ "A replacement name for Psammorhynchus Grande & Hilton, 2006 (Actinopterygii, Acipenseriformes, Acipenseridae)". Journal of Paleontology. 83 (2). 2009.
  3. ^ Lance, Grande (2006). "An Exquisitely Preserved Skeleton Representing a Primitive Sturgeon from the Upper Cretaceous Judith River Formation of Montana (Acipenseriformes: Acipenseridae: N. gen. and sp.)". Cambridge University Press. 80 (4): 1–39. doi:10.1666/05032.1. S2CID 131689748.
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