Only two fossil species attributed to Chimaera are actually confidently assignable to it, including C. seymourensis from the
Late-EoceneLa Meseta Formation on
Seymour Island off the coast of the
Antarctic Peninsula,[6][7] and C. pliocenica from the
Pliocene of
Tuscany, Italy.[7]Chimaera zangerli from Late Cretaceous (Maastrichtian) of Seymour Island,[8] was considered by later authors to belong to Elasmodectes instead. C.eophantasma from the Paleocene of England has since been considered a synonym of Elasmodus hunteri. C. gosseleti and C. rupeliensis from the Oligocene of Belgium are synonymous with each other, with C.gosseleti being the senior synonym, and have subsequently been placed in the genus Harriotta. Chimaera javana from the Miocene of Java is lost, and therefore considered a nomen dubium. "Chimaera" anomala from the Miocene of Australia is more similar to Ischyodus, and does not belong to Chimeridae.[7]
References
^Kemper, J.M.; Ebert, D.A.; Naylor, G.J.P. & Didier, D.A. (2014). "Chimaera carophila (Chondrichthyes: Chimaeriformes: Chimaeridae), a new species of chimaera from New Zealand". Bulletin of Marine Science. 91 (1): 63–81.
doi:
10.5343/bms.2014.1042.
^Iglésias, S. P.; Kemper, J. M. & Naylor, G. J. P. (2022). "Chimaera compacta, a new species from southern Indian Ocean, and an estimate of phylogenetic relationships within the genus Chimaera (Chondrichthyes: Chimaeridae)". Ichthyological Research. 69 (1): 31–45.
Bibcode:
2022IchtR..69...31I.
doi:
10.1007/s10228-021-00810-9.
S2CID233622655.