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Gregoriidae

Gregoriidae
Temporal range: Serpukhovian
Srianta cf. S. srianta from the Surprise Canyon formation
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: †Euchondrocephali
Family: †Gregoriidae
Lund and Grogan 2004[1]
Genera[1]

Gregoriidae is an extinct family of early chondrichthyans from the Carboniferous period.[2] It currently includes three described genera: Gregorius, Srianta, and Bealbonn. This family includes remains formerly ascribed to the genus Desmiodus, which is now considered a nomen vanum or nomen dubium.[3][4] The relationships between the included genera are not entirely clear.[5] Fossils are known from Serpukhovian-aged formations including the Bear Gulch Limestone and Surprise Canyon Formation.[6]

References

  1. ^ a b R. Lund and E. Grogan. 2004. Five new euchondrocephalan Chondrichthyes from the Bear Gulch Limestone (Serpukhovian, Namurian E2b) of Montana, USA. Recent Advances in the Origin and Early Radiation of Vertebrates 505–531
  2. ^ "Fossilworks: Gregoriidae". fossilworks.org. Archived from the original on 12 December 2021. Retrieved 10 October 2020.
  3. ^ Lund, Richard; Grogan, Eileen D. (2004). "Five new euchondrocephalan Chondrichthyes from the Bear Gulch Limestone (Serpukhovian, Namurian E2b) of Montana, USA". Recent Advances in the Origin and Radiation of Early Vertebrates: 505–531. ISBN 3-89937-052-X.
  4. ^ Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016). Fishes of the World (5th ed.). Wiley. pp. 48–51. doi:10.1002/9781119174844. ISBN 978-1-118-34233-6.
  5. ^ 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.
  6. ^ 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:10.1017/jpa.2018.72


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