List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
|
||||||||||
Dasygnathus longidens n. gen., n. sp.
Huxley 1877
|
Benton and Spencer 1995 | 1 individual | ||||||||
nomen dubium belonging to Pseudosuchia | ||||||||||
ELGNM 1R, maxilla with teeth, ELGNM 15R, right pterygoid. Both specimens probably belong to a single individual | ||||||||||
Stagonolepis robertsoni
Agassiz 1844
|
3 individuals | |||||||||
2 large individuals (NMS, ELGNM, AUGD specimens); 1 small individual (ELGNM specimen) | ||||||||||
see common names |
Geography
Country: | United Kingdom | State/province: | Scotland | County: | Moray |
Coordinates: | 57.7° North, 3.3° West (view map) | ||||
Paleocoordinates: | 34.0° North, 0.9° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Stratigraphy
Formation: | Lossiemouth Sandstone | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Age of the Lossiemouth Sandstone Formation is based upon vertebrate biostratigraphy, with comparisons made to the faunal assemblages from the lower part of the Maleri Formation (India), the upper part of the Santa Maria Formation (Brazil) and the Ischigualasto Formation (Argentina). This is suggestive of a late Carnian to early Norian age (Benton & Walker 2011). |
Lithology and environment
Primary lithology: | "cross stratification",medium lithified sandstone |
Includes fossils? | Y |
Lithology description: "The Lossiemouth Sandstones are white, buff, yellow, or pinkish. Grain size is usually uniform with grains well-rounded. The rock is composed of quartz, feldspar, and rare brownish chert and quartzite. Cements are usually overgrowths of secondary quartz and feldspar, but calcite and fluorspar may also occur. The sandstones may be finely laminated, but more usually they show large-scale cross-beds on well-weathered surfaces. These features, as well as the absence of pebbles, the rarity of micas and heavy minerals, strongly suggest aeolian deposition". | |
Environment: | dune |
Geology comments: "Foreset analysis indicates a prevailing south-westerly wind forming barchan dunes. Dunes up to 20 m high migrated across the flood plain during arid intervals" |
Taphonomy
Modes of preservation: | body,mold/impression |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | good |
Associated major elements: | some |
Disassociated major elements: | some |
Fragmentation: | occasional |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | survey of museum collection |
Reason for describing collection: | general faunal/floral analysis |
Metadata
Database number: | 89005 | ||
Authorizer: | R. Butler | Enterer: | R. Butler |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2009-04-28 03:59:24 | Last modified: | 2015-06-29 11:35:59 |
Access level: | the public | Released: | 2009-04-28 03:59:24 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
55639. | R. L. Paton. 1975. A Catalogue of Fossil Vertebrates in the Royal Scottish Museum, Edinburgh. Part Four / Amphibia & Reptilia. Royal Scottish Museum Information Series. Geology 5 1-38 [M. Carrano/M. Carrano] |
Secondary references:
15587 | ETE | M. J. Benton and P. S. Spencer. 1995. Fossil Reptiles of Great Britain. Chapman & Hall, London 1-386 [M. Carrano/K. Maguire/J. Tennant] |
29840 | M. J. Benton and A. D. Walker. 1985. Palaeoecology, taphonomy, and dating of Permo-Triassic reptiles from Elgin, north-east Scotland. Palaeontology 28:207-234 [R. Butler/R. Butler] | |
29841 | T. H. Huxley. 1859. On the Stagonolepis robertsoni (Agassiz) of the Elgin Sandstones; and on the recently discovered footmarks in the sandstones of Cummingstone. Quarterly Journal of the Geological Society of London 15:440-460 [R. Butler/R. Butler] | |
29842 | T. H. Huxley. 1877. The crocodilian remains found in the Elgin Sandstones, with remarks on the ichnites of Cummingstone. Memoirs of the Geological Survey of the United Kingdom, Monograph 3:1-52 [R. Butler/R. Butler] | |
29839 | A. D. Walker. 1961. Triassic reptiles from the Elgin area: Stagonolepis, Dasygnathus and their allies. Philosophical Transactions of the Royal Society of London, Series B 244:103-204 [R. Butler/R. Butler] | |
13771 | ETE | A. D. Walker. 1964. Triassic reptiles from the Elgin area: Ornithosuchus and the origin of carnosaurs. Philosophical Transactions of the Royal Society of London, Series B, Biological Sciences 248:53-134 [M. Carrano/M. Carrano/M. Carrano] |