Seldsienean

Seldsienean (Old English for "seldom seen one") is an extinct genus of machimosaurid thalattosuchian from the Middle Jurassic of England and France.^[1] It is known from the Calcaire de Caen and the Cornbrash Formation.^[1]

Seldsienean Temporal range: Middle Jurassic, Bathonian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Holotype skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Suborder:	†Thalattosuchia
Family:	†Machimosauridae
Genus:	†Seldsienean Johnson et al., 2020
Species:	†S. megistorhynchus
Binomial name
†Seldsienean megistorhynchus (Eudes-Deslongchamps, 1866)
Synonyms
Steneosaurus megistorhynchus Eudes-Deslongchamps, 1866

Alternative view of the holotype

Its type species, S. megistorhynchus, was originally described as a species of Steneosaurus in 1866,^[2] but was given its own genus in 2020.^[1]