Trinacromerum

Taxonavigation

Taxonavigation: Cryptoclidoidea
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 Cladus: Sarcopterygii Cladus: Rhipidistia Cladus: Tetrapodomorpha Cladus: Eotetrapodiformes Cladus: Elpistostegalia Superclassis: Tetrapoda Cladus: Reptiliomorpha Cladus: Amniota Classis: Reptilia Cladus: Eureptilia Cladus: Romeriida Subclassis: Diapsida Cladus: Sauria Cladus: Archelosauria Superordo: †Sauropterygia Ordo: †Plesiosauria Subordo: †Plesiosauroidea Superfamilia: Cryptoclidoidea

Trinacromerum Cragin, 1888

Albright, L.B., Gillette, D.D. & Titus, A.L. 2007. Plesiosaurs from the Upper Cretaceous (Cenomanian-Turonian) Tropic Shale of southern Utah, part 2: Polycotylidae. Journal of Vertebrate Paleontology 27(1): 41–58. PDF. DOI: 10.1671/0272-4634(2007)27[41:PFTUCC]2.0.CO;2 . PDF.