Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Paracanthopterygii
Order †Sphenocephaliformes
Familia: †Sphenocephalidae
Genus: †Sphenocephalus
Species (1): †S. fissicaudus
Name
†Sphenocephalus Agassiz, 1839
References
Primary references
Agassiz, L. 1839. Recherches Sur Les Poissons Fossiles. Tome IV (livr. 13). Imprimerie de Petitpierre: Neuchatel.
Sphenocephalus (from Greek: σφήν sphḗn, 'wedge' and Greek: κεφαλή kephalḗ 'head') is an extinct genus of ray-finned fish that lived during the Cretaceous period. Fossils have been found in England and Italy.
Sphenocephalus was about 20 centimetres (8 in) long, with a rather large head, and may have resembled a modern black bass in appearance. It was one of the earliest fish to have the pelvic fins placed beneath th pectoral fins, a common feature in modern fish that improves swimming manoeuvrability. Like the modern trout-perches, it possessed a mixture of modern and primitive features, and it was probably one of the earliest perciform fish.[1]
References
Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 41. ISBN 1-84028-152-9.
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