Comanche Peak Power Plant, Glen Rose (SMU): Early/Lower Albian, Texas
collected by V. Mills 1977

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ostracoda
Ostracoda indet. Latreille 1802
Osteichthyes
Osteichthyes indet. Huxley 1880
Reptilia
Azhdarchidae indet. Nessov 1984
1 specimen
SMU 72547, humerus
    = ? Azhdarchoidea indet. Unwin 1992
Ibrahim et al. 2010
    = Radiodactylus langstoni n. gen., n. sp. Andres and Myers 2013
Andres and Myers 2013
SMU 72547
unclassified
Plantae indet. Haeckel 1866
carbonized log
see common names

Geography
Country:United States State/province:Texas County:Somervell
Coordinates: 32.3° North, 97.7° West (view map)
Paleocoordinates:29.9° North, 55.6° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Albian 10 m.y. bin:Cretaceous 4
Key time interval:Early/Lower Albian
Age range of interval:113.00000 - 109.90000 m.y. ago
Stratigraphy
Geological group:Trinity Formation:Glen Rose Limestone
Stratigraphic resolution:bed
Stratigraphy comments: The Glen Rose formation spans through four ammonite zones with ages between latest Aptian and early Albian. Young 1974 suggested the Kasanskyella spathi ammonite zone is latest aptian, the Hypacanthoplites cragini zone is earliest Albian, the Douvilleiceras mammillatum and Hypacanthoplites comalensis zones are early Albian and may extend into the middle Albian. The Salenia texana Zone and Corbula bed fall within the mammillatum zone. The benthic foraminifera Orbitolina texana also suggests a late aptian - early albian age and is found in basal levels and in the upper member (Stricklin et al. 1971). Scott et al. (2007) estimated that the age of the Glen Rose Formation ranges from 113.3 to 108.0 Ma.
Lithology and environment
Primary lithology:gray lithified lime mudstone
Includes fossils?Y
Lithology description: "within a grey, relatively well-indurated fossiliferous marine micritic limestone."
Environment:carbonate indet.
Taphonomy
Modes of preservation:body,mold/impression
Degree of concentration:dispersed
Size of fossils:macrofossils
Preservation of anatomical detail:good
Disassociated major elements:some
Disassociated minor elements:some
Spatial resolution:parautochthonous
Collection methods and comments
Collection excludes:all microfossils,some macrofossils
Collection methods:selective quarrying,survey of museum collection
Reason for describing collection:general faunal/floral analysis
Collectors:V. Mills Collection dates:1977
Collection method comments: collected by Vernon Mills of Stephenville, TX.
Taxonomic list comments:"The matrix contains carbonized wood fragments, plant cuticles, numerous ostracodes, and isolated bones, fish teeth, and scales. In immediate association was a carbonized log, the impression of which is preserved in one of the limestone blocks collected by Mills."
Metadata
Database number:84273
Authorizer:M. Carrano, R. Butler, G. Lloyd Enterer:M. Carrano, R. Butler, G. Lloyd
Modifier:G. Varnham Research group:vertebrate
Created:2008-10-02 14:34:34 Last modified:2022-03-23 04:34:12
Access level:the public Released:2008-10-02 14:34:34
Creative Commons license:CC BY
Reference information

Primary reference:
28233.ETE P. A. Murry, D. A. Winkler, and L. L. Jacobs. 1991. An azhdarchid pterosaur humerus from the Lower Cretaceous Glen Rose Formation of Texas. Journal of Paleontology 65(1):167-170 [M. Carrano/M. Carrano/M. Carrano]

Secondary references:

67236 B. Andres and T. S. Myers. 2013. Lone Star Pterosaurs. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103:383-398 [G. Lloyd/G. Lloyd]
32662 N. Ibrahim, D. M. Unwin, D. M. Martill, L. Baidder, and S. Zouhri. 2010. A new pterosaur (Pterodactyloidea: Azharchidae) from the Upper Cretaceous of Morocco. PLoS One 5(5):e10875 [R. Butler/R. Butler]