Dimmer Camp, pit 2, bed 7a: Oxynotum, United Kingdom
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Actinopterygii
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Actinopterygii indet.
Cope 1887
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| "indet. fish remains" | ||||||||||
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Crinoidea
- Isocrinida
- Isocrinidae
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Isocrinus sp.
von Meyer 1836
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Balanocrinus quiaiosensis
Loriol 1891
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Echinoidea
- Nicolleaumatidae
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Eodiadema minuta
(Buckman 1845)
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| recombined as Nicolleauma minutum | ||||||||||
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Rhynchonellata
- Terebratulida
- Zeilleriidae
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Zeilleria perforata
(Piette 1856)
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| (1 measurement) | ||||||||||
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Cincta numismalis
(Lamarck 1819)
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| (1 measurement) | ||||||||||
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Rhynchonellata
- Rhynchonellida
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Rhynchonellida indet.
Kuhn 1949
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Rhynchonellata
- Rhynchonellida
- Rhynchonellidae
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"Rhynchonelloidea" ? cynica
(Buckman 1895)
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| Does not resemble Rhynchonelloidea; perhaps Calcirhynchia or something similar (1 measurement) | ||||||||||
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Lingulata
- Lingulida
- Lingulidae
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Lingula sp.
Bruguiére 1797
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Bivalvia
- Ostreida
- Gryphaeidae
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Gryphaea sp.
Lamarck 1801
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Bivalvia
- Pectinida
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Pectinida indet.
(Gray 1854)
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Bivalvia
- Pectinida
- Oxytomidae
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Oxytoma inequivalvis
(Sowerby 1819)
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| (1 measurement) | ||||||||||
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Bivalvia
- Nuculanida
- Polidevciidae
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Ryderia doris
(d'Orbigny 1849)
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| original and current combination Leda doris | ||||||||||
| (2 measurements) | ||||||||||
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Cephalopoda
- Belemnitida
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Belemnitida indet.
Zittel 1895
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Cephalopoda
- Ammonitida
- Oxynoticeratidae
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Cheltonia acciptris
Buckman 1923
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Gleviceras glevense
Buckman 1918
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Cephalopoda
- Ammonitida
- Echioceratidae
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Palaeoechioceras spirale
(Trueman and Williams 1927)
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Cephalopoda
- Ammonitida
- Eoderoceratidae
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Bifericeras sp.
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Bifericeras bifer
(Quenstedt 1845)
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Bifericeras nudicosta
(Quenstedt 1845)
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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| "Spired gastropods" | ||||||||||
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Pleurotomarioidea indet.
(Swainson 1840)
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Gastropoda
- Acteoninidae
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? Acteonina sp.
d'Orbigny 1850
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unclassified
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Crustacea indet.
Brünnich 1772
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| invalid subgroup of Pancrustacea | ||||||||||
| "indet. crustacean remains" | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | Somerset |
| Coordinates: | 51.1° North, 2.5° West (view map) | ||
| Paleocoordinates: | 37.8° North, 4.0° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Oxynotum | ||
| Age range of interval: | 199.50000 - 192.90000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Oxynotum subzone. 2.3 m thick. | |||||
Lithology and environment
| Primary lithology: | gray lithified claystone |
| Environment: | offshore |
| Geology comments: The lack of ripple lamination and scour structures also indicates that the sediment accumulated at depths below storm wave base. | |
Taphonomy
| Modes of preservation: | body,original calcite,replaced with pyrite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | BMNH |
Metadata
| Database number: | 159473 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2014-08-02 18:53:01 | Last modified: | 2014-08-02 18:53:01 |
| Access level: | the public | Released: | 2014-08-02 18:53:01 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 52119. | N. T. J. Hollingworth, D. J. Ward, M. J. Simms and P. Clothier. 1990. A temporary exposure of Lower Lias (Late Sinemurian) at Dimmer Camp, Castle Cary, Somerset, south-west England. Mesozoic Research 2:163-180 [M. Clapham/M. Clapham] |