Dogsthorpe brick pit (bed 11): Middle Callovian, United Kingdom
collected by A. N. Leeds 1907-1908
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Reptilia
- Metriorhynchidae
|
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Metriorhynchus brachyrhynchus
(Eudes-Deslongchamps 1868)
|
2 individuals | |||||||||
| Skulls: BMNH 3700 (neotype), 3699 - also figured by Andrews (1913) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | England | County: | Cambridgeshire |
| Coordinates: | 52.6° North, 0.2° West (view map) | ||||
| Paleocoordinates: | 36.0° North, 18.6° East (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Callovian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Middle Callovian | Ammonoid zone: | Sigaloceras enodatum - Kosmoceras phaeinum |
| Age range of interval: | 165.3 - 161.5 m.y. ago |
Stratigraphy
| Geological group: | Ancholme | Formation: | Oxford Clay | Member: | Peterborough |
| Local section: | Peterborough | Local bed: | 11 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: The Peterborough Member (Sigiloceras enodatum (S. calloviense Zone)–Kosmoceras phaeinum (Peltoceras athleta Zone) ammonite Subzone: late Early–early Late Callovian, Middle Jurassic, previously termed the ‘lower Oxford Clay’. From the "Saurian Zone", likely bed 11. | |||||
Lithology and environment
| Primary lithology: | carbonaceous mudstone |
| Includes fossils? | Y |
| Lithology description: "The Lower Oxford Clay is composed predominantly of organic-rich mudstones that on exposure rapidly develop a shale-like fissility" (Hudson & Martill 1991, p. 20-21) | |
| Environment: | offshore indet. |
| Geology comments: "accumulated in a wide, shallow (30–50 m deep) epeiric sea" | |
Taphonomy
| Modes of preservation: | body,shellbed |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,mechanical | ||
| Reason for describing collection: | paleoecologic analysis | ||
| Museum repositories: | BMNH | ||
| Collectors: | A. N. Leeds | Collection dates: | 1907-1908 |
Metadata
| Also known as: | Peterborough | ||
| Database number: | 133068 | ||
| Authorizer: | R. Benson | Enterer: | R. Benson |
| Modifier: | P. Wagner | Research group: | vertebrate |
| Created: | 2012-09-01 02:45:31 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2012-09-01 02:45:31 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 42840. | E. T. Leeds. 1908. On Metriorhynchus brachyrhynchus (Deslong) from the Oxford Clay near Peterborough. Quarterly Journal of the Geological Society 64:345-357 [R. Benson/R. Benson/R. Benson] |
Secondary references:
| 33944 | C. W. Andrews. 1913. A Descriptive Catalogue of the Marine Reptiles of the Oxford Clay. Based on the Leeds Collection in the British Museum (Natural History), London. Part II [M. Carrano/H. Street] | |
| 46063 | D. M. Martill and J. D. Hudson. 1991. Fossils of the Oxford Clay 1-286 [R. Benson/R. Benson/R. Benson] |