The osteology of Concornis lacustris (Aves, Enantiornithes) from the Lower Cretaceous of Spain and a reexamination of its phylogenetic relationships. American Museum novitates ; no. 3133
Year: 1995
Type: article
Abstract: Additional preparation of the holotype of Con- cornis lacustris from the Lower Cretaceous (Bar- remian) deposits of Las Hoyas (Spain) has pro- vided abundant new osteological data.This spec- imen is superbly preserved and anatomical details are available for most skeletal regions except the skull and neck.The forelimb has "modem" pro- portions but it retains large claws.The sternum is carinate and deeply notched.The carina, however, does not reach the cranial margin but is developed in the caudal half ofthe sternum.The dorsal, syn- sacral and caudal vertebrae are amphicoelous.The dorsal vertebrae have deep lateral grooves and parapophyses in a central position.The ischium has large obturator and dorsal processes; the pubes form a distal symphysis.The hind limb is gracile, elongate, and longer than the forelimb.Cladistic analysis of various ornithothoracine taxa supports the allocation of Concornis lacustris within the Enantiornithes, a major clade of Cre- taceous birds mostly recognized from continental deposits.This new interpretation is substantially supported by 12 synapomorphies shared by C. lacustris and the remaining enantiornithines.
Source: American Museum Novitates
Language: English
Subfield: Paleontology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1935583209