Delorhynchus

Delorhynchus is an extinct genus of acleistorhinid stem reptile known from the late Early Permian Garber Formation of Comanche County, Oklahoma. It contains three species: the type species D. priscus is based on a series of maxillae. The second species to be described, D. cifellii, is known from a larger number of well-preserved skulls and skeletal material. The third species, D. multidentatus, is based on a fragmentary skull with several rows of teeth on its jaw.

Discovery

The type species, D. priscus, was first described and named by Richard C. Fox in 1962. The generic name "Delorhynchus" is derived from Greek rhynchos/ρυγχος, meaning "beak" (a common suffix for extinct reptile genera names). The specific name of the type species D. priscus is derived from Greek πρίσκος, meaning "ancient" or "venerable" in reference to the fragmentary nature of the known remains. ==Classification==

Classification

Until recently, the phylogenetic position of Delorhynchus within Procolophonomorpha was uncertain, due to the fragmentary nature of the remains of D. priscus. However, with the description of D. cifellii by Reisz et al. (2014), Delorhynchus could be added for the first time into a phylogenetic analysis to resolve its position. Reisz et al. (2014) recovered Delorhynchus in a sister taxon position to the clade formed by Acleistorhinus and Lanthanosuchus. Thus Delorhynchus was either considered to be the sister taxon of Lanthanosuchoidea, or a basal lanthanosuchoid, depending on the definition of Lanthanosuchoidea used. }} == Paleoecology ==

Paleoecology

The Richards Spur locality presents a very rich Early Permian vertebrate paleofauna, including species of chondrichthyes, lepospondyls, seymouriamorphs, basal synapsids, and basal eureptiles. At least six species of parareptiles have been described apart from the three Delorhynchus species. They include the basal parareptile Microleter mckinzieorum, the bolosaurid Bolosaurus grandis, the nyctiphruretid Abyssomedon williamsi, and three other lanthanosuchoids: Colobomycter pholeter, Colobomycter vaughni, and Feeserpeton oklahomensis. ==References==

Source: Wikipedia ↗

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