Also known as Slickstones

Where: England, United Kingdom (51.6° N, 2.4° W: paleocoordinates 20.6° N, 6.5° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Carnian (237.0 - 228.0 Ma)

• 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.

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•Morton et al. 2017: biostratigraphy of conchostracans from the fissure deposits of Cromhall Quarry also support a late Rhaetian age

• group of beds-level stratigraphic resolution

Environment/lithology: fissure fill; lithology not reported

Size classes: macrofossils, mesofossils

Collected by N. Fraser in 1990

Collection methods: bulk, chemical, mechanical,

• VMNH: Virginia Museum of Natural History

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25298: authorized by Matthew Carrano, entered by Matthew Carrano on 07.09.2002

Creative Commons license: CC BY (attribution)