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Ailuravus is a genus of prehistoric rodents in the family Ischyromyidae.
Bellerophontoidea, common name "bellerophonts", is a superfamily of extinct planospirally-coiled globose molluscs. This superfamily is generally included within the Gastropoda, but may instead be a group of monoplacophorans. The taxon first appeared late in the Cambrian and continued until late in the Triassic.
†Archinacellidae is an extinct family of paleozoic molluscs of uncertain position.
Bucaniidae is an extinct family of Paleozoic molluscs of uncertain position possibly being either gastropods or monoplacophorans in the superfamily Bellerophontoidea. The family lived from the Lower Ordovician to the Devonian and have shells in which the apertural margins tend to flare. Most genera have a slit and selenizone, others some modification of this feature.
Helcionopsis is an extinct genus of paleozoic monoplacophoran in the family Tryblidiidae.
Corixa is a genus of aquatic bugs in the family Corixidae. The fossil species C. elegans is from the Rott Formation in Nordrhein-Westfalen.
Prioniodus is an extinct genus of conodonts in the family Balognathidae from the Ordovician.
Cypraedia is an extinct genus of gastropods.
Oulodus is a genus of conodonts in the family Prioniodinidae.
Craniops is an extinct genus of brachiopods in the family Craniopsidae with species known from the Ordovocian to the Devonian.
Digitolabrum is an extinct genus of sea snails in the family Aporrhaidae. Most species are from the Eocene of France. D. abedi and D. elegans are from the Eocene of Egypt.
Zychaspis is an extinct genus of Devonian jawless fishes. Species are from the Devonian of Ukraine.
Cyrtolites is an extinct genus of monoplacophorans in the family Cyrtolitidae.
Calliomphalus is an extinct genus of sea snails in the family Eucyclidae.
Cheilotomona is an extinct genus of prehistoric marine gastropods in the family Goniasmatidae. The species C. elegans is from a Pelsonian/Illyrian marine shale/marl in the Triassic Qingyan Formation of Guizhou Province, China.
Cancelloceras is an extinct genus of ammonites in the family Gastrioceratidae. Species are from the Carboniferous.
Plicochonetes is an extinct genus of brachiopods in the extinct family Rugosochonetidae.
Cosmacanthus is an extinct genus of placoderms in the extinct family Groenlandaspididae that lived during the Late Devonian in Ireland, the UK, Russia and North America. It was named by Louis Agassiz in 1845.
Nemacanthus is an extinct genus of prehistoric sharks in the family Palaeospinacidae.
Cyclopteris is an extinct genus of seed ferns in the extinct family †Cyclopteridaceae. Species are from the Carboniferous.
References
- ↑ T. A. Conrad. 1838. Report on the palaeontological department of the survey. New York Geological Survey, Annual Report 2, pages 107-119
- ↑ Ulrich E. O. & Scofield W. H. 1897. The Lower Silurian Gastropoda of Minnesota. In: Ulrich E. O., Scofield W. H., Clarke J. M. & Winchell N. H. The Geological and Natural History Survey of Minnesota, volume 3(2), Harrison and Smith, Minneapolis, 48 plates. Pages 813-1081, plates 61-82. Bucaniidae on page 849.
