Cromhall Quarry (1990 fill): Carnian, United Kingdom
collected by N. Fraser 1990

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Terrestrisuchus sp. Crush 1984
Rauisuchiformes indet. Parrish 1993
Fraser et al. 2002
Reptilia - Guaibasauridae
? Dinosauria indet. Owen 1842
(1 measurement)
    = Agnosphitys cromhallensis n. gen., n. sp. Fraser et al. 2002
Fraser et al. 2002
see common names

Geography
Country:United Kingdom State/province:England County:Gloucestershire
Coordinates: 51.6° North, 2.4° West (view map)
Paleocoordinates:20.6° North, 6.5° East
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Triassic Epoch:Late/Upper Triassic
Stage:Carnian 10 m.y. bin:Triassic 3
*Period:Late/Upper Triassic
*International age/stage:Early/Lower Carnian - Late/Upper Rhaetian
Key time interval:Carnian
Age range of interval:237.00000 - 228.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: Whiteside & Marshall (2008) argue for a Rhaetian age based upon the shared presence of Planocephalosaurus with deposits at Tytherington dated as Rhaetian on the basis of palynomorphs, and the presence of fish remains that are typical of the Rhaetian Penarth Group.

Morton et al. 2017: biostratigraphy of conchostracans from the fissure deposits of Cromhall Quarry also support a late Rhaetian age
Lithology and environment
Primary lithology: not reported
Environment:fissure fill
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:variable
Abundance in sediment:common
Disassociated major elements:many
Disassociated minor elements:many
Fragmentation:frequent
Temporal resolution:condensed
Collection methods and comments
Collection methods:bulk,chemical,mechanical,field collection
Reason for describing collection:taxonomic analysis
Collectors:N. Fraser Collection dates:1990
Collection method comments: VMNH: Virginia Museum of Natural History
Metadata
Also known as:Slickstones
Database number:25298
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2002-09-07 17:46:51 Last modified:2024-02-16 10:25:15
Access level:the public Released:2002-09-07 17:46:51
Creative Commons license:CC BY
Reference information

Primary reference:

17019.ETE N. C. Fraser and K. Padian. 1995. Possible basal dinosaur remains from Britain and the diagnosis of the Dinosauria. Journal of Vertebrate Paleontology 15(3, suppl.):30A [M. Carrano/M. Carrano]

Secondary references:

7095 N. C. Fraser, K. Padian, G. M. Walkden and A. L. M. Davis. 2002. Basal dinosauriform remains from Britain and the diagnosis of the Dinosauria. Palaeontology 45(1):79-95 [M. Carrano/M. Carrano/M. Carrano]
87573 M. J. Simms and K. Drost. 2024. Caves, dinosaurs and the Carnian Pluvial Episode: Recalibrating Britain’s Triassic karst ‘fissures'. Palaeogeography, Palaeoclimatology, Palaeoecology 638:112041 [M. Carrano/M. Carrano]