Hilbre Island, Dee Estuary (Triassic of the United Kingdom)

Where: Wirral, United Kingdom (53.4° N, 3.2° W: paleocoordinates 16.0° N, 10.0° E)

• coordinate stated in text

• local area-level geographic resolution

When: Ormskirk Sandstone Formation, Anisian (247.2 - 242.0 Ma)

• "Traditionally, the rocks exposed on Hilbre have been assigned, as part of the Cheshire Basin, to the Chester Pebble Bed Formation (formerly Bunter Pebble Beds) of the Lower Triassic. Evaluation of the footprint assemblage and the sedimentology of the beds tests and generally supports the recent hypothesis of the British Geological Survey that the exposures on Hilbre should be reassigned to the Ormskirk Sandstone Formation (Middle Triassic) within the East Deemster sub-basin (part of the East Irish Sea Basin)... [from the] Lower Anisian (Middle Triassic)." (King & Thompson, 2000)

Environment/lithology: "floodplain"; sandstone

• Bed A is lowest in section, Bed E is highest

Size class: macrofossils

Preservation: trace

Collection methods: LIVCM - Liverpool Museum, UK

Primary reference: M. J. King and D. B. Thompson. 2000. Triassic vertebrate footprints from the Sherwood Sandstone Group, Hilbre, Wirral, northwest England. Proceedings of the Geologists' Association 111:111-132 [A. Dunhill/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197349: authorized by Alex Dunhill, entered by Bethany Allen on 06.11.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
  - Rhynchosauroidae
Rhynchosauroides sp. Maidwell 1911 reptile
From Bed E, LIVCM 1995.163.A-AQ (Slab 1); AR-BJ (Slab 2)
cf. Rhynchosauroides sp. Maidwell 1911 reptile
From Bed A, MJK/HILB/2
"Rhynchosauroides cf. membranipes" = Rhynchosauroides rectipes Beasley 1911 reptile
From Bed E, LIVCM 1995.163.A-AQ (Slab 1)
 Pseudosuchia - Chirotheriidae
cf. Chirotherium sp. Kaup 1835 archosaur
From Bed A, MJK/HILB/3a/3b; From Bed E, LIVCM 1995.163.AR-BJ