Boyd local fauna: Early/Lower Albian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Rajiformes
Hypolophus mcnultyi Thurmond 1971
recombined as Pseudohypolophus mcnultyi
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834
see common names

Geography
Country:United States State/province:Texas County:Wise
Coordinates: 33.1° North, 97.5° West (view map)
Paleocoordinates:30.7° North, 55.1° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
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: not reported
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:99156
Authorizer:M. Carrano Enterer:M. Oreska
Modifier:G. Varnham Research group:vertebrate
Created:2010-10-29 07:59:05 Last modified:2022-03-23 05:27:50
Access level:the public Released:2010-10-29 07:59:05
Creative Commons license:CC BY
Reference information

Primary reference:
34100.ETE J. T. Thurmond. 1971. Cartilaginous fishes of the Trinity Group and related rocks (Lower Cretaceous) of north central Texas. Southeastern Geology 13:207-227 [M. Carrano/M. Carrano/M. Oreska]

Secondary references:

56060 J. T. Thurmond. 1974. Lower vertebrate faunas of the Trinity Division on north-central Texas. In B. F. Perkins (ed.), Aspects of Trinity Division Geology. A Symposium on the Stratigraphy, Sedimentary Environments, and Fauna of the Comanche Cretaceous Trinity Division (Aptian and Albian) of Texas and Northern Mexico. Geoscience and Man 8:103-129 [M. Carrano/M. Carrano]