Durlston Bay (DB114): Late/Upper Berriasian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hybodontiformes
Hybodontoidea indet. Agassiz 1834
scales
Chondrichthyes - Hybodontiformes - Polyacrodontidae
Polyacrodus parvidens (Woodward 1916)
Chondrichthyes - Hybodontiformes - Hybodontidae
Egertonodus basanus (Egerton 1845)
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lonchidion inflexum Underwood and Rees 2002
Polyacrodus rugianus (Ansorge 1990)
recombined as Parvodus rugianus
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
see common names

Geography
Country:United Kingdom State/province:England County:Dorset
Coordinates: 50.6° North, 2.0° West (view map)
Paleocoordinates:41.5° North, 7.9° East
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Berriasian 10 m.y. bin:Cretaceous 1
Key time interval:Late/Upper Berriasian
Age range of interval:145.00000 - 140.20000 m.y. ago
Stratigraphy
Geological group:Purbeck Formation:Durlston Member:Stair Hole
Local section:Durlston Bay Local bed:DB114
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: 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).
Lithology and environment
Primary lithology: lime mudstone
Lithology description: "micrite"
Environment:lagoonal
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Disassociated minor elements:many
Bioerosion:occasional
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:bulk,chemical,acetic,sieve,field collection
Minimum sieve size:0.355
Reason for describing collection:taxonomic analysis
Museum repositories:BMNH
Collection method comments: 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
Metadata
Database number:90715
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:G. Varnham Research group:vertebrate
Created:2009-08-13 09:52:21 Last modified:2022-03-17 09:36:14
Access level:the public Released:2009-08-13 09:52:21
Creative Commons license:CC BY
Reference information

Primary reference:

30534. 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]