Also known as Pant Quarry, St. Brides
Where: Wales, United Kingdom (51.5° N, 3.6° W: paleocoordinates 37.7° N, 1.8° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Hettangian to Hettangian (201.3 - 190.8 Ma)
• Fissure fills in Late Carboniferous (Dinantian) limestone. Deposits resulting from Liassic transgression over Carboniferous limestones. Kermack, Mussett, and Rigney (1981) note that a Lower Sinemurian age for the Welsh fissures is supported by evidence in David Pacey's unpublished thesis (1978).
• bed-level stratigraphic resolution
Environment/lithology: fissure fill; limestone and hematitic, gray, green, red, yellow marl
• Fissures in limestone filled with silt, acting as traps for small animals. Localities lie on a small limestone plateau that formed an island (Robinson, 1971) or archipelago in Jurassic times. Triassic to Jurassic subsidence and a transgression by Tethys Ocean gradually resulted in inundation by Early Jurassic (Sinemurian). Such fissure fills formed in open joints in the limestone and are from 0.3 to 1 m wide.
• The matrix filling of the fissures ranges from soft clay to hard marl and often is rich in hematite grains. Matrix color varies from red to yellow, green and gray, and the bone can be white to dark gray and brown. Typically bone is white and matrix is red. Plant fossils are often preserved as charcoal (fusain) in gray matrix (also in yellow and red).
Size classes: mesofossils, microfossils
Reposited in the BMNH
Collection methods: quarrying, chemical,
Primary reference: W. A. Clemens. 2007. Early Jurassic allotherians from South Wales (United Kingdom). Fossil Record 10(1):50-59 [R. Butler/R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 137123: authorized by Richard Butler, entered by Richard Butler on 10.12.2012
Creative Commons license: CC BY (attribution)
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| Rhynchocephalia -
| Therapsida - Tritylodontidae
| Holotheria -
| Allotheria -
Thomasia cf. moorei
Owen 1871 mammal
NHMUK M45421 (= Specimen A), left upper molariform; M45422 (= Specimen B), left upper molariform; M45423 (= Specimen C), fragment of a molariform with two cusps, central basin, and one complete root; M45426 (= Specimen F), fragment of a molariform: M45424 (= Specimen D), upper incisiform.