Where: England, United Kingdom (50.6° N, 2.3° W: paleocoordinates 41.5° N, 7.6° E)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Durlston Formation (Purbeck Group), Late/Upper Berriasian (145.0 - 140.2 Ma)
• Durlston Formation is likely upper Berriasian in age based on magnetostratigraphy (Ogg et al. 1994; Ogg et al. 2008) and correlates to other upper Berriasian assemblages in Europe (e.g. Wimbledon and Hunt 1993).
• bed-level stratigraphic resolution
Environment/lithology: lagoonal; grainstone
Size class: mesofossils
Reposited in the BMNH
Collection methods: bulk, chemical, acetic, sieve,
• bulk samples throughout the section "varied in size from 1 to 25 kg" and material "was principally obtained by [acetic] acid treatment of limestones" before washing and picking
Primary reference: C. J. Underwood and J. Rees. 2002. Selachian faunas from the lowermost Purbeck Group of Dorset, southern England. Special Papers in Palaeontology 68:83-101 [J. Alroy/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 90727: authorized by John Alroy, entered by John Alroy on 13.08.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
| |
Polyacrodus parvidens Woodward 1916 elasmobranch | |
Egertonodus basanus Egerton 1845 elasmobranch | |
"Polyacrodus rugianus" = Parvodus rugianus Ansorge 1990 elasmobranch
Lonchidion crenulatum Patterson 1966 elasmobranch
Lonchidion inflexum Underwood and Rees 2002 elasmobranch |