Gregoriidae

Gregoriidae; Temporal range: Serpukhovian PreꞒ Ꞓ O S D C P T J K Pg N
	Srianta cf. S. srianta from the Surprise Canyon formation
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Euchondrocephali
Infraclass:
Family:	Gregoriidae
Genera
	Gregorius; Srianta; Bealbonn;

Gregoriidae is an extinct family of early sharks from the Carboniferous period.^[1] It currently includes three described genera: , , and Bealbonn. This family includes remains formerly ascribed to "Desmiodus," which is now considered a nomen vanum.^[2] The relationships between the included genera are not entirely clear.^[3] Fossils are known from Serpukhovian-aged formations including the Bear Gulch Limestone and Surprise Canyon Formation.^[4]

References[]

^ "Fossilworks: Gregoriidae". fossilworks.org. Retrieved 2020-10-10.
^ "LUND, R. & GROGAN, E.D. (2004) | Literature | Shark-References". shark-references.com. Retrieved 2020-10-10.
^ Grogan, E. D., & Lund, R. (2008). A basal elasmobranch, Thrinacoselache gracia n. gen and sp.,(Thrinacodontidae, new family) from the Bear Gulch Limestone, Serpukhovian of Montana, USA. Journal of Vertebrate Paleontology, 28(4), 970-988.
^ John-Paul M. Hodnett, David K. Elliott; Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology ; 92 (S77): 1–33. doi: https://doi.org/10.1017/jpa.2018.72

This shark-related article is a stub. You can help Wikipedia by .

[1] "Fossilworks: Gregoriidae". fossilworks.org. Retrieved 2020-10-10.

[2] "LUND, R. & GROGAN, E.D. (2004) | Literature | Shark-References". shark-references.com. Retrieved 2020-10-10.

[3] Grogan, E. D., & Lund, R. (2008). A basal elasmobranch, Thrinacoselache gracia n. gen and sp.,(Thrinacodontidae, new family) from the Bear Gulch Limestone, Serpukhovian of Montana, USA. Journal of Vertebrate Paleontology, 28(4), 970-988.

[4] John-Paul M. Hodnett, David K. Elliott; Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology ; 92 (S77): 1–33. doi: https://doi.org/10.1017/jpa.2018.72

[1]

[2]

[3]

[4]

Gregoriidae Temporal range: Serpukhovian PreꞒ Ꞓ O S D C P T J K Pg N

Srianta cf. S. srianta from the Surprise Canyon formation
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Euchondrocephali
Infraclass:
Family:	Gregoriidae
Genera
Gregorius Srianta Bealbonn