Tribodus

Tribodus; Temporal range: Aptian-Albian, 112.6–109 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Hybodontiformes
Family:	†Hybodontidae
Genus:	†Tribodus; Brito & Ferreira, 1989
Type species
	†Tribodus limae; Brito & Ferreira, 1989

Tribodus is an extinct genus of hybodont shark from the Romualdo Formation of northeastern Brazil. It lived during the Early Cretaceous period (Aptian to Albian stages). This genus is known from articulated and somewhat complete specimens, from a locality known for the extraordinary preservation of the fossil remains found. Tribodus specimens have been preserved three-dimensionally, and acid-preparation methods have revealed much of the anatomy of this shark.^[1]^[2]Tribodus is found to have dorsal fin-spines and head spines, though only in males.^[2]

References[]

^ Maisey, J. G., and J. S. S. Denton. (2016). "Dermal denticle patterning in the Cretaceous hybodont shark Tribodus limae (Euselachii, Hybodontiformes), and its implications for the evolution of patterning in the chondrichthyan dermal skeleton". Journal of Vertebrate Paleontology. doi:10.1080/02724634.2016.1179200.CS1 maint: multiple names: authors list (link)
^ Jump up to: ^a ^b Lane, Jennifer A.; Maisey, John G. (2012). "The Visceral Skeleton and Jaw Suspension In the Durophagous Hybodontid Shark Tribodus limae from the Lower Cretaceous of Brazil". Journal of Paleontology. 86 (5): 886–905. doi:10.1666/11-139.1. ISSN 0022-3360.

[Triboduslimae-1] Maisey, J. G., and J. S. S. Denton. (2016). "Dermal denticle patterning in the Cretaceous hybodont shark Tribodus limae (Euselachii, Hybodontiformes), and its implications for the evolution of patterning in the chondrichthyan dermal skeleton". Journal of Vertebrate Paleontology. doi:10.1080/02724634.2016.1179200.CS1 maint: multiple names: authors list (link)

[Tribodus-2] Jump up to: ^a ^b Lane, Jennifer A.; Maisey, John G. (2012). "The Visceral Skeleton and Jaw Suspension In the Durophagous Hybodontid Shark Tribodus limae from the Lower Cretaceous of Brazil". Journal of Paleontology. 86 (5): 886–905. doi:10.1666/11-139.1. ISSN 0022-3360.

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