The Santa Rosa Formation is a geologic formation exposed in New Mexico that was deposited in the Carnian Age of the late Triassic Period .
7-505: Santa Rosa Formation may refer to: Santa Rosa Formation, New Mexico , Triassic geologic formation of New Mexico Santa Rosa Formation, Colombia , Lower Cretaceous geologic formation of Colombia See also [ edit ] Santa Rosa Group , a geologic group in Belize and Guatemala Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
14-599: Is interpreted as a lacustrine deposit in lakes that formed due to local subsidence from dissolution of underlying Permian salt beds. Paleocurrents were primarily to the south in the Tecolotito Member and northeast in the Tres Lagunas Member but are indeterminate in the Los Esteros Member. The Los Esteros Member has yielded fossils of the fern Cynepteria lasiophora , the cycad Zamites powelli ,
21-808: The Anton Chico Formation and is overlain by the Garita Creek Formation . The total thickness of the formation is 32 meters (105 ft). The formation is divided into (in ascending stratigraphic order) the Tecolotito Member , which is primarily sandstone; the Los Esteros Member , which is primarily mudstone; and the Tres Lagunas Member , which is primarily sandstone. The sandstone members are interpreted as alluvial sheets deposited by braided streams . The Los Esteros Member
28-907: The conifer Pelourdea pleoensis , the gymnosperm Dinophyton spinusos , and seeds ( Samaropsis ). This member also includes a microvertebrate site in Santa Fe County, New Mexico that has yielded a diverse fossil assemblage. Fish fossils include lungfish toothplates of Arganodus dorothea , a redfieldiid dermopteric, and scales from Turseodus , including from coprolites . Amphibian fossil fragments are probably from Buttneria perfecta and Apachesaurus gregorii . Reptiles include Trilophosaurus , indeterminate phytosaurs , Desmatosuchus haplocerus , Stagonolepis wellesii , several new aetosaurs , Chatterjeea elegans , Hesperosuchus , and Parrishia mcreai . Synapsids are represented by an indeterminate kannemeyeriiform dicynodont and an unnamed cynodont . In east-central New Mexico,
35-530: The Los Esteros Member has also yielded a Otischalkian dinosauromorph assemblage that includes specimens of Silesauridae and Lagerpetidae , including Dromomeron , the latter of unusually large size. The formation was first named as the Santa Rosa Sandstone by N.H. Darton in July 1919 but the report was not published until 1922. By then the name had already appeared in other publications. A type locality
42-625: The title Santa Rosa Formation . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Santa_Rosa_Formation&oldid=984567159 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Santa Rosa Formation, New Mexico The formation consists mostly of white to brown sandstone and mudstone with some interbedded conglomerate . The formation lies on
49-549: Was not formally designated until 1972. In 1987, Spencer G. Lucas and Adrian Hunt removed the lower sandstone beds into the Anton Chico Formation and divided the remaining beds into members. W.I. Finch and coinvestigators redesignated the unit as the Santa Rosa Formation in 1988. Trilophosaurus Too Many Requests If you report this error to the Wikimedia System Administrators, please include
#591408