Microlestes Quarry, Frome: Rhaetian, United Kingdom
collected by C. Moore, W. Kühne 1860, 1939
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Crocodilia indet.
Owen 1842
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Macfadyen 1970 | |||||||||
= Crocodylomorpha indet.
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Mannion 2017 | |||||||||
Chondrichthyes
- Hybodontiformes
- Polyacrodontidae
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Hybodus cloacinus
Quenstedt 1858
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Macfadyen 1970 | |||||||||
recombined as Polyacrodus cloacinus | ||||||||||
Chondrichthyes
- Hybodontiformes
- Acrodontidae
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Palaeobates sp.
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Macfadyen 1970 | 2 specimens | ||||||||
CD18, M176 | ||||||||||
= Palaeobates reticulatus n. sp.
Duffin 1998
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Duffin 1998 | |||||||||
Chondrichthyes
- Hybodontiformes
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Lissodus sp.
Brough 1935
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Storrs 1994 | |||||||||
Acrodus minimus
Agassiz 1839
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Macfadyen 1970 | 45000 specimens | ||||||||
recombined as Lissodus minimus | ||||||||||
Chondrichthyes
- Hybodontiformes
- Pseudodalatiidae
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Pseudodalatias sp.
Reif 1978
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Storrs 1994 | |||||||||
Chondrichthyes
- Synechodontiformes
- Palaeospinacidae
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Palaeospinax rhaeticus
Duffin 1982
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Duffin 1982 | 5 specimens | ||||||||
recombined as Synechodus rhaeticus | ||||||||||
CD19-20, M181a-c | ||||||||||
Nemacanthus sp.
Agassiz 1836
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Storrs 1994 | |||||||||
Chondrichthyes
- Synechodontiformes
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Hybodus minor
Agassiz 1837
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Macfadyen 1970 | |||||||||
recombined as Rhomphaiodon minor | ||||||||||
Chondrichthyes
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Polyacrodus holwellensis n. sp.
Duffin 1998
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Duffin 1998 | 2 specimens | ||||||||
recombined as Duffinselache holwellensis | ||||||||||
CD16, M181 | ||||||||||
Vallisia coppi
Duffin 1982
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Duffin 1982 | |||||||||
recombined as Vallisodus coppi | ||||||||||
Chondrichthyes
- Lamniformes
- Cetorhinidae
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Pseudocetorhinus pickfordi n. gen., n. sp.
Duffin 1998
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Duffin 1998 | 12 specimens | ||||||||
CD23, 1997/1-11 | ||||||||||
Chondrichthyes
- Chimaeriformes
- Myriacanthidae
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Agkistracanthus mitgelensis
Duffin and Furrer 1981
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Duffin 1994 | 6 specimens | ||||||||
M186, a-e | ||||||||||
Dipnoi
- Ceratodontidae
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Ceratodus sp.
Agassiz 1838
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Storrs 1994 | |||||||||
Haramiyidae
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Microcleptes sp.
Simpson 1928
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Simpson 1928 | 5 specimens | ||||||||
synonym of Thomasia | ||||||||||
Bath Museum M218 (a canine/incisor), M220 (four canines/incisors) | ||||||||||
Microcleptes fissurae n. sp.
Simpson 1928
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Simpson 1928 | 3 specimens | ||||||||
synonym of Thomasia antiqua | ||||||||||
BMNH M2401A-C (molars) | ||||||||||
Thomasia anglica n. sp.
Simpson 1928
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Simpson 1928 | 3 specimens | ||||||||
synonym of Thomasia antiqua | ||||||||||
Bath Museum M219, M221; YPM 13622b (molars) | ||||||||||
Microlestes sp.
Plieninger 1847
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Owen 1859 | 9 specimens | ||||||||
Bath Museum M211-M217, M222; YPM 13622A (molars) | ||||||||||
= Microlestes moorei n. sp.
Owen 1871
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Owen 1871 | |||||||||
recombined as Thomasia moorei | ||||||||||
Morganucodonta
- Morganucodontidae
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Eozostrodon parvus n. gen., n. sp.
Parrington 1941
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Parrington 1941 | 1 specimen | ||||||||
Holwell IX | ||||||||||
Eozostrodon problematicus n. sp.
Parrington 1941
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Parrington 1941 | 1 specimen | ||||||||
synonym of Eozostrodon parvus | ||||||||||
Holwell XIII | ||||||||||
Reptilia
- Trilophosauridae
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Variodens sp.
Robinson 1957
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Whiteside et al. 2016 | |||||||||
Variodens inopinatus
Robinson 1957
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Whiteside and Duffin 2017 | 1 specimen | ||||||||
Referred material: Specimen BATGM CD4, an anterior mid-region fragment of a left dentary | ||||||||||
Reptilia
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Palaeosaurus sp.
Riley and Stutchbury 1836
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Macfadyen 1970 | |||||||||
nomen dubium belonging to Phytosauria | ||||||||||
Thecodontosaurus sp.
Riley and Stutchbury 1836
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Macfadyen 1970 | |||||||||
Reptilia
- Rhynchocephalia
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Gephyrosaurus sp.
Evans 1980
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Whiteside et al. 2016 | |||||||||
Gephyrosaurus evansae n. sp.
Whiteside and Duffin 2017
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Whiteside and Duffin 2017 | 1 specimen | ||||||||
Holotype: Specimen BATGM CD1: anterior and mid region of the lower part of a right maxilla displaying emplacements for 24 pleurodont teeth | ||||||||||
Reptilia
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Pachystropheus sp.
von Huene 1935
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Storrs 1994 | |||||||||
Reptilia
- Placodontia
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Placodontia indet.
(Cope 1871)
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Macfadyen 1970 | |||||||||
Reptilia
- Procolophonidae
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Procolophonidae indet.
Lydekker 1889
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Whiteside et al. 2016 | |||||||||
Actinopteri
- Semionotiformes
- Semionotidae
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Sargodon tomicus
Plieninger 1847
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Macfadyen 1970 | |||||||||
Actinopteri
- Perleidiformes
- Colobodontidae
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Colobodus sp.
Agassiz 1843
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Macfadyen 1970 | |||||||||
Palaeonisciformes
- Palaeoniscidae
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Gyrolepis alberti
(Agassiz 1834)
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Macfadyen 1970 | |||||||||
original and current combination Gyrolepis albertii | ||||||||||
Palaeonisciformes
- Birgeriidae
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Birgeria sp.
Stensiö 1919
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Macfadyen 1970 | |||||||||
Saurichthys acuminatus
Agassiz 1843
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Macfadyen 1970 | |||||||||
recombined as Birgeria acuminata | ||||||||||
unclassified
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Penegephyrosaurus curtiscoppi n. sp.
Whiteside and Duffin 2017
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Whiteside and Duffin 2017 | 1 specimen | ||||||||
Holotype: BATGM C193: a part of a left dentary with emplacements for five teeth | ||||||||||
see common names |
Geography
Country: | United Kingdom | State/province: | England | County: | Somerset |
Coordinates: | 51.2° North, 2.4° West (view map) | ||||
Paleocoordinates: | 35.7° North, 1.1° East | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Triassic | Epoch: | Late/Upper Triassic |
Stage: | Rhaetian | 10 m.y. bin: | Triassic 4 |
Key time interval: | Rhaetian | ||
Age range of interval: | 208.50000 - 201.30000 m.y. ago |
Stratigraphy
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Rhaetian fissure infill, "Lower Rhaetic" |
Lithology and environment
Primary lithology: | green lithified claystone |
Secondary lithology: | poorly lithified sandstone |
Includes fossils? | Y |
Lithology description: "The filling may be a peculiar greenish clay, or hard clay with pebbles, etc., or friable sand." | |
Environment: | fissure fill |
Taphonomy
Modes of preservation: | body |
Size of fossils: | mesofossils,microfossils |
Collection methods and comments
Collection methods: | bulk,peel or thin section,sieve,survey of museum collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | C. Moore, W. Kühne | Collection dates: | 1860, 1939 |
Collection method comments: Moore collection at Bath Geology Museum. |
Metadata
Also known as: | Holwell | ||
Database number: | 120898 | ||
Authorizer: | M. Clapham, R. Benson, P. Mannion, R. Butler, M. Carrano | Enterer: | M. Clapham, P. Vazquez, P. Mannion, R. Benson, E. Dunne, M. Carrano, R. Butler |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2011-11-23 11:45:15 | Last modified: | 2019-12-12 15:03:16 |
Access level: | the public | Released: | 2011-11-23 11:45:15 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
29873. | R. Owen. 1871. Monograph of the fossil Mammalia of the Mesozoic formations. 24(110):vi-115 [R. Butler/R. Butler/M. Carrano] |
Secondary references:
38227 | W. A. Clemens and Z. Kielan-Jaworowska. 1979. Multituberculata. In J. A. Lillegraven, Z. Kielan-Jaworowska, W. A. Clemens (eds.), Mesozoic Mammals: the first two-thirds of mammalian history 99-149 [R. Benson/R. Benson] | |
42437 | G. Cuny and S. Risnes. 2005. The Enameloid Microstructure of the Teeth of Synechodontiform Sharks (Chondrichthyes: Neoselachii). PalArch 3(2):9-19 [M. Clapham/P. Vazquez/M. Clapham] | |
38607 | C. J. Duffin. 1982. Teeth of a new selachian from the Upper Triassic of England. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1982(3):156-166 [M. Clapham/M. Clapham] | |
38111 | C. J. Duffin. 1982. A palaeospinacid shark from the Upper Triassic of south-west England. Zoological Journal of the Linnean Society 74:1-7 [M. Carrano/M. Carrano] | |
46012 | C. J. Duffin. 1994. Myriacanthid holocephalans (Chondrichthyes) from the British Late Triassic. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 192(1):1-16 [M. Clapham/P. Vazquez/M. Clapham] | |
44052 | C. J. Duffin. 1998. New shark remains from the British Rhaetian (latest Triassic) 1. The earliest basking shark. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 3:157-181 [M. Clapham/P. Vazquez] | |
44560 | C. J. Duffin. 1998. New shark remains from the British Rhaetian (latest Triassic) 2. Hybodonts and palaeospinacids. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 1998(4):240-256 [M. Clapham/P. Vazquez/M. Clapham] | |
71227 | F. v. Huene. 1940. Fossilium Catalogus. I: Animalia. Pars 93: Mammalia Triadica 1-13 [M. Carrano/M. Carrano/M. Carrano] | |
53178 | W. A. Macfadyen. 1970. Geological Highlights of the West Country. A Nature Conservancy Handbook 1-296 [M. Carrano/M. Carrano/M. Carrano] | |
63504 | P. D. Mannion. 2017. Personal opinions. [P. Mannion/P. Mannion] | |
16226 | R. Owen. 1859. Palaeontology. The Encyclopaedia Brittanica, or Dictionary of Arts, Sciences, and General Literature (8th Edition) 17:91-176 [P. Wagner/P. Wagner/M. Carrano] | |
48742 | F. R. Parrington. 1941. On two mammalian teeth from the Lower Rhaetic of Somerset. Journal of Natural History, series 11 8(44):140-144 [M. Carrano/M. Carrano] | |
12290 | P. L. Robinson. 1957. The Mesozoic fissures of the Bristol Channel area and their vertebrate faunas. Zoological Journal of the Linnean Society 43:260-228 [R. Whatley/R. Whatley/R. Butler] | |
38748 | G. G. Simpson. 1928. A Catalogue of the Mesozoic Mammalia in the Geological Department of the British Museum 1-215 [R. Benson/R. Benson/M. Uhen] | |
29868 | G. W. Storrs. 1994. Fossil vertebrate faunas of the British Rhaetian (latest Triassic). Zoological Journal of the Linnean Society 112:217-259 [R. Butler/R. Butler/M. Carrano] | |
59609 | D. I. Whiteside, C. J. Duffin, P. G. Gill, J. E. A. Marshall, and M. J. Benton. 2016. The Late Triassic and Early Jurassic fissure faunas from Bristol and South Wales: stratigraphy and setting. Palaeontologia Polonica 67:257-287 [M. Carrano/M. Carrano] | |
66019 | D. I. Whiteside and C. J. Duffin. 2017. Late Triassic terrestrial microvertebrates from Charles Moore’s ‘Microlestes’ quarry, Holwell, Somerset, UK. Zoological Journal of the Linnean Society 179:677-705 [R. Butler/E. Dunne] |