Gregoriidae
Gregoriidae is an extinct family of early sharks from the Carboniferous period.[1] It currently includes three described genera: Gregorius, Srianta, 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]
| Gregoriidae Temporal range: | |
|---|---|
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| Srianta cf. S. srianta from the Surprise Canyon formation | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
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| Infraclass: | Paraselachii |
| Family: | Gregoriidae |
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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:10.1017/jpa.2018.72
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