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Acleistorhinidae is notable for being the oldest-known parareptilian clade. The family is diagnosed by the presence two synapomorphies: (1) the largest tooth is located far anteriorly on the maxilla; and (2) cranial ornamentation consists of sparse and shallow circular dimples. [2]
Parareptilia ("near-reptiles") is an extinct subclass or clade of basal sauropsids/reptiles, typically considered the sister taxon to Eureptilia (the group that likely contains all living reptiles and birds). Parareptiles first arose near the end of the Carboniferous period and achieved their highest diversity during the Permian period. Several ...
Acleistorhinus (ah-kles-toe-RYE-nuss) is an extinct genus of parareptile known from the Early Permian (middle Kungurian stage) of Oklahoma. [1] It is notable for being the earliest known anapsid reptile yet discovered.
Carbonodraco is the oldest known parareptile, and is slightly older than Erpetonyx, the previously oldest known parareptile. Specimens of Carbonodraco are limited to skull and jaw fragments found at the Ohio Diamond Coal mine in Linton, Ohio.
However, Hylonomus, the oldest eureptile known from fossil evidence, lived millions of years before parareptiles appeared in the fossil record. The discovery of Erpetonyx helped to shorten this gap between parareptile and eureptile fossils, as Erpetonyx lived in the Late Carboniferous and is one of the oldest known parareptiles (though ...
Measuring at 9.2cm from foot to foot, ‘Hemsworth’ the male funnel-web spider (Atrax robustus) is the largest of its kind recorded by the Australian Reptile Park.(Australian Reptile Park)
The oldest gun found in the continental U.S. makes for a great headline, and Seymour has been besieged by media since the paper was published. The superlative attached to the cannon is of course ...
Feeserpeton was found to be a basal member of this group, the sister taxon of a clade including Acleistorhinus and Lanthanosuchus. Features that place Feeserpeton within Lanthanosuchoidea include a ridge on the frontal bone above the eye socket, a plate-like supraoccipital bone with a sagittal crest on the braincase, and a notch midway along ...