Debeeriidae is a family of holocephalan fishes from the Mississippian subperiod of the Carboniferous. It is the only family of the order Debeeriiformes.[1] It is named after the type genus, Debeerius, which itself is named in honor of Gavin de Beer. Members of this family and order possess a spine on the first dorsal fin, an opercular cover over the gills,[2] and an autodiastylic (two-jointed) jaw suspension.[3] Both genera in the family are known from exceptionally well-preserved specimens found in the Bear Gulch Limestone member of the Heath Formation.[2][3]

References

  1. ^ "Debeeriidae". mindat.org. Retrieved 26 October 2024.
  2. ^ a b Grogan, Eileen D.; Lund, Richard (1995-01-01). "Pigment patterns; soft anatomy and relationships of Bear Gulch Chondrichthyes (Namurian E2b; Lower Carboniferous; Montana; USA)". Geobios. Premiers Vertandébrandés et Vertandébrandés Infandérieurs. 28: 145–146. doi:10.1016/S0016-6995(95)80102-2. ISSN 0016-6995.
  3. ^ a b Grogan, Eileen D.; Lund, Richard (2000). "Debeerius ellefseni (Fam. Nov., Gen. Nov., Spec. Nov.), an autodiastylic chondrichthyan from the Mississippian Bear Gulch Limestone of Montana (USA), the relationships of the chondrichthyes, and comments on gnathostome evolution". Journal of Morphology. 243 (3): 219–245. doi:10.1002/(SICI)1097-4687(200003)243:3<219::AID-JMOR1>3.0.CO;2-1. ISSN 0362-2525.


Allikas: http://en.wikipedia.org/wiki/Debeeriiformes
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