Biology:Priohybodus
Priohybodus is an extinct genus of hybodont shark that lived in Sahara Africa, the Arabian Peninsula and South America during the Late Jurassic and Early Cretaceous periods. This genus contains a singular species, P. arambourgi. It can grow up to 2 to 4 meters in length (based on tooth size) and preyed primarily on fish and large vertebrates grasping and cutting their prey.
It has been taxonomically grouped with Secarodus and Planohybodus into an informally named group Priohybodontines.[1]
The genus was first described by Erasmo in 1960 based off of fragmented and isolated tooth crowns discovered in a Late Jurassic formation in Somalia. The discovery of fossil material from the Early Cretaceous of southern Tunisia and the Late Jurassic Lugh series of Somalia greatly exspanded its geographic range. In Ethiopia, there are remains of a partially complete crown probably dated to the Tithonian age.[2]
Distribution
Like many members of Hybodontiformes, this genus had a wide palaeogeographic distribution across Gondwana being known from deposits in Saharan Africa and the Arabian Peninsula (Yemen). In Somalia it is known from the Late Jurassic period in the Conca di El Mao and Gerdes el Abid (Lugh series) formations. In Ethiopia, it is known from the Late Jurassic Mugher Mudstone.[2] The Late Jurassic of northern Yemen and Uruguay have remains from the Amran and Tacuarembó formations respectively with 22 isolated teeth and a dorsal fin spine being discovered.[3] Lastly for the Late Jurassic, it is known from the Aliança Formation in Brazil. In the Early Cretaceous of Tunsinia, remains have been found in the Douiret Formation.[4][1]
Description
It has fully serrated cutting edges on its teeth and was the first hybodontiform shark known to develop this. The teeth of this genus shows a high range of morphological plasticity.[1]
References
- ↑ 1.0 1.1 1.2 Eltink, Estevan; da Silva, Kelly Roberta; de França, Marco Aurélio Gallo; de Morais, Débora Melo Ferrer; Soto, Matías; Duffin, Christopher J. (2025-04-20). "Morphology and paleoecology of a hybodontiform with serrated teeth, Priohybodus arambourgi , from the Late Jurassic of northeastern Brazil" (in en). The Anatomical Record 309 (1): 5–32. doi:10.1002/ar.25671. ISSN 1932-8486. PMID 40254967. PMC 12688016. https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25671.
- ↑ 2.0 2.1 Duffin, Christopher (1 January 2001). "The hybodont shark Priohybodus d’Erasmo, 1960 (Early Cretaceous, northern Africa).". Zoological Journal of the Linnean Society 133 (3): 303-308. https://www.academia.edu/5851438/The_hybodont_shark_Priohybodus_d_Erasmo_1960_Early_Cretaceous_northern_Africa_.
- ↑ Perea, Daniel; Ubilla, Martín; Rojas, Alejandra; Goso, Cesar A. (November 2003). "The West Gondwanan Occurrence Of The Hybodontid Shark Priohybodus, And The Late Jurassic-Early Cretaceous Age Of The Tacuarembo Formation, Uruguay" (in en). Palaeontology 44 (6): 1227–1235. doi:10.1111/1475-4983.00222. ISSN 0031-0239.
- ↑ Soto, M.; Perea, D.; Torino, P. (2012). "New remains of Priohybodus arambourgi (Hybodontiformes: Hybodontidae) from Late Jurassic-earliest Cretaceous deposits in Uruguay". Cretaceous Research 35: 118–123. doi:10.1016/j.cretres.2011.12.001.
Template:Chondrichthyan genera
Wikidata ☰ Q116986306 entry
category:Fossils of Uruguay
category:Fossils of Libya
category:Fossils of Somalia
category:Fossils of Yemen
category:Fossils of Ethiopia
category:Fossils of Tunisia
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