词条 | Exellia |
释义 |
| name = Exellia | fossil_range = {{fossil range|34}}Thanetian to Lutetian | image =Exellia velifer - Bolca.jpg | image_caption = Exellia velifer | regnum = Animalia | phylum = Chordata | classis = Actinopterygii | ordo = Perciformes | familia = Ephippidae | genus = Exellia | genus_authority = | subdivision_ranks = Species | subdivision =
}} Exellia is a genus of extinct spadefish that lived in the Tethys Ocean during the early Paleogene. The adult form is shaped akin to a large spadefish or a short dolphinfish, with very large pelvic fins, and a long dorsal fin starting from in front of the eyes to near the base of the caudal peduncle. The juvenile form resembles a juvenile drumfish, with the dorsal fin forming a long crest on top of the head. The earlier species, E. proxima, is known from the Danata Formation Lagerstätten from the Late Paleocene of Turkmenistan. The latter-occurring species, E. velifer, is the better studied species, and is known from numerous adult and juvenile specimens from the Middle Eocene Monte Bolca Lagerstätten. Most researchers regard Exellia as a spadefish, though, some remove this genus, and the related Eoluvarus[1] to a separate family, "Exelliidae." References1. ^ Phylogenetic Revision of the Fish Families Luvaridae and †Kushlukiidae (Acanthuroidei), with a New Genus and Two New Species of Eocene Luvarids {{Taxonbar|from=Q5419988}}{{paleo-perciformes-stub}} 2 : Exelliids|Prehistoric ray-finned fish genera |
随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。