Stair Hole SH1: Late/Upper Berriasian, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Testudines
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Testudines indet.
Batsch 1788
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Reptilia
- Crocodylia
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Crocodylia indet.
(Owen 1842)
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Chondrichthyes
- Hybodontiformes
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Hybodontoidea indet.
Agassiz 1834
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scales | ||||||||||
Chondrichthyes
- Hybodontiformes
- Polyacrodontidae
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Polyacrodus parvidens
(Woodward 1916)
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Chondrichthyes
- Hybodontiformes
- Hybodontidae
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Egertonodus basanus
(Egerton 1845)
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"Hybodus" ensis
Woodward 1916
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recombined as Planohybodus ensis | ||||||||||
Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Polyacrodus rugianus
(Ansorge 1990)
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recombined as Parvodus rugianus | ||||||||||
Lonchidion crenulatum
(Patterson 1966)
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see common names |
Geography
Country: | United Kingdom | State/province: | England | County: | Dorset |
Coordinates: | 50.6° North, 2.3° West (view map) | ||||
Paleocoordinates: | 41.5° North, 7.6° 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: | 140.60000 - 139.80000 m.y. ago |
Stratigraphy
Geological group: | Purbeck | Formation: | Durlston | ||
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: | packstone |
Lithology description: marine molluscs are present | |
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: | 90729 | ||
Authorizer: | J. Alroy | Enterer: | J. Alroy |
Modifier: | G. Varnham | Research group: | vertebrate |
Created: | 2009-08-13 10:20:19 | Last modified: | 2022-03-17 09:42:57 |
Access level: | the public | Released: | 2009-08-13 10:20:19 |
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] |