New paddlefishes (Acipenseriformes, Polyodontidae) from the Late Cretaceous Tanis Site of the Hell Creek Formation in North Dakota, USA
New paddlefishes (Acipenseriformes, Polyodontidae) from the Late Cretaceous Tanis Site of the Hell Creek Formation in North Dakota, USA
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来自美国北达科他州地狱溪组晚白垩世塔尼斯遗址的新白鲟(鲟鱼目,多齿鱼科)
DOI:
10.1017/jpa.2023.19
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发表时间:
2023
影响因子:
1.4
通讯作者:
Ahlberg, Per E.
中科院分区:
文献类型:
--
作者:
Hilton, Eric J.;During, Melanie A.D.;Grande, Lance;Ahlberg, Per E.
The recently discovered mass mortality of fishes from the Tanis Site in the North Dakota portion of the Late Cretaceous Hell Creek Formation contains many well-preserved, three-dimensional skeletons. Among these are representatives of two acipenseriform families, Acipenseridae (sturgeons) and Polyodontidae (paddlefishes). This paper describes two new monotypic polyodontid genera, expanding our knowledge of polyodontid diversity. The first of the new species described here is †Parapsephurus willybemisin. gen. n. sp. It is distinguished from all other known species by having a combination of posteriorly elongate parietals, the middle fenestra longitudinalis bordered medially by the parietal and frontal and laterally by the dermopterotic, slender and numerous dorsal caudal fulcra, an elongate hyomandibula that is not hourglass shaped, and gill rakers that are short and widely spaced. The second polyodontid species described here is †Pugiopsephurus inundatusn. gen. n. sp. It is diagnosed by a combination of having stellate bones that are exceptionally poorly developed or absent and having a dermopalatine with a medial expansion and lacking an ectopterygoid process. The two species of paddlefishes described in this paper add to the morphological and taxonomic diversity of Polyodontidae. The presence of these taxa within the Hell Creek Formation hints at substantial diversity of polyodontids at this stage of their evolutionary history.UUID: http://zoobank.org/08cbf8c5-59ba-41fa-9265-8cb762cf7b13
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影响因子:
1.4
作者:
Brinkman, Donald B.;Divay, Julien D.;Mantilla, Gregory P. Wilson
通讯作者:
Mantilla, Gregory P. Wilson
影响因子:
1.4
作者:
A. Murray;D. Brinkman;D. Demar;G. Wilson
通讯作者:
G. Wilson
DOI:
--
发表时间:
1968
期刊:
影响因子:
--
作者:
Coleman J. Coin;W. Auffenberg
通讯作者:
W. Auffenberg
影响因子:
1.4
作者:
E. Hilton;L. Grande
通讯作者:
E. Hilton;L. Grande
影响因子:
2.3
作者:
A. Murray;D. Brinkman;M. G. Newbrey;A. Neuman
通讯作者:
A. Neuman