| 词条 | Antlers Formation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 释义 |
| name = Antlers Formation | image = | caption = | type = Geological formation | age = Early Cretaceous | period = Early Cretaceous | prilithology = Mudstone | otherlithology = Sandstone | namedfor = | namedby = Robert Thomas Hill[1] | region = Oklahoma, Texas | country = {{USA}} | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} The Antlers Formation is a stratum which ranges from Arkansas through southern Oklahoma into northeastern Texas. The stratum is {{convert|150|m|abbr=on}} thick consisting of silty to sandy mudstone and fine to coarse grained sandstone that is poorly to moderately sorted. The stratum is cemented with clay and calcium carbonate. In places the sandstone may be conglomeratic or ferruginous (rich in iron oxides). Based on correlation with the Trinity Group of Texas, the Antlers Formation is estimated to be late Aptian-early Albian. This age range is supported by the presence of two dinosaurs that are also known from the Cloverly Formation, Deinonychus and Tenontosaurus. AmphibiansIndeterminate frog remains. Possible indeterminate salamander remains.
Basal vertebrates ("Fish")References: Cifelli et al. 1999; Wedel et al. 2000, Kielan-Jarorowska and Cifelli 2001; Nydam and Cifelli 2002. Cartilaginous fish
Ray-finned fishPossible indeterminate amiid remains. Possible indeterminate lepisosteid remains. Possible indeterminate semionotidae remains.
MammalsPossible indeterminate deltatheroidan material. Indeterminate multituberculate remains. Indeterminate tribosphenidan remains.
ReptilesCrurotarsansPossible indeterminate atoposaurid remains. Possible indeterminate goniopholidid remains. Possible indeterminate pholidosaurid remains.
LepidosaursPossible indeterminate scincid remains.
Ornithischians
SaurischiansPossible indeterminate bird remains are known from the formation.
Turtles
See also{{Portal|Earth sciences|Paleontology|Dinosaurs||}}
References1. ^{{cite journal|last1=Hill|first1=R.T.|title=Geology of parts of Texas, Indian Territory and Arkansas adjacent to Red River|journal=Bulletin of the Geological Society of America|date=1894|volume=5|page=303}} 2. ^"Table 13.1," in Weishampel, et al. (2004). Page 267. Further reading
(Aptian-Albian) Antlers and Cloverly formations. Journal of Vertebrate Paleontology. 22:286–298.
10 : Lower Cretaceous Series of North America|Cretaceous geology of Oklahoma|Geologic formations of Arkansas|Cretaceous geology of Texas|Natural history of Oklahoma|Natural history of Arkansas|Natural history of Texas|Paleontology in Texas|Paleontology in Arkansas|Paleontology in Oklahoma |
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