Lavernock Point: Hettangian, United Kingdom
collected by March 2014

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Isocrinida - Isocrinidae
cf. Hispidocrinus sp. Simms 1988
Echinoidea - Pedinoida - Pedinidae
cf. Diademopsis sp.
Reptilia
Dracoraptor hanigani n. gen., n. sp. Martill et al. 2016
1 specimen
NMW 2015.5G.1–2015.5G.11, disarticulated but associated partial skeleton
Bivalvia - Pectinida - Limidae
cf. Antiquilima sp. Cox 1943
Plagiostoma sp. Sowerby 1814
Pseudolimea sp. Douglas and Arkell 1932
Bivalvia - Pectinida - Oxytomidae
cf. Oxytoma sp. (Meek and Hayden 1865)
original and current combination Avicula (Oxytoma)
Bivalvia - Ostreida - Gryphaeidae
Liostrea sp. Douvillé 1904
see common names

Geography
Country:United Kingdom State/province:Wales County:Vale of Glamorgan
Coordinates: 51.4° North, 3.2° West (view map)
Paleocoordinates:37.4° North, 0.3° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Jurassic Epoch:Early/Lower Jurassic
Stage:Hettangian 10 m.y. bin:Jurassic 1
Key time interval:Hettangian Ammonoid zone: Psiloceras erugatum
Age range of interval:201.40000 - 199.50000 m.y. ago
Stratigraphy
Geological group:Lias Formation:Blue Lias Member:Bull Cliff
Stratigraphic resolution:bed
Stratigraphy comments: "The cliff at this locality is ~7 m high and exposes the top of the Late Triassic Penarth Group on the east side, and the Blue Lias Formation of the Lower Lias Group forming the point. Structurally this is the southwest dipping limb of the Lavernock syncline in the Bristol Channel Basin. The cliff fall in which Dracoraptor was discovered comprises material restricted to the lowest two to three metres of the section and comprises debris mainly from the Bull Cliff Member of the Blue Lias Formation. Lithological and bed thickness comparisons indicate that the dinosaur comes from either bed 7 or bed 9, of the Bull Cliff Member, both of which contain a thin, but distinctive bed of broken calcitic shelly material"
"Considering that the new dinosaur occurs at a stratigraphic position above the δ13Corg isotope anomaly; that it occurs above a clear lithological boundary representing a distinct facies change from shallow to deepening marine conditions; that it is associated with a Jurassic type shelly fauna, and that pollen analyses of nearby sections are of Jurassic type, the new dinosaur should be regarded as being of Early Hettangian age. Thus it most likely belongs to the P. erugatum subzone of the P. tilmanni Zone and is dated at 201.3 ± 0.2 million years old"
Lithology and environment
Primary lithology: "limestone"
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Temporal resolution:snapshot
Collection methods and comments
Collection methods:surface (float),mechanical,field collection
Reason for describing collection:taxonomic analysis
Collectors:March 2014 Collection dates:Nick and Rob Hanigan
Collection method comments: NMW: Amgueddfa Cymru—National Museum Wales, Cardiff
Metadata
Database number:176060
Authorizer:R. Butler Enterer:R. Butler
Modifier:M. Carrano
Created:2016-01-24 00:44:13 Last modified:2022-09-28 13:50:01
Access level:the public Released:2016-01-24 00:44:13
Creative Commons license:CC BY
Reference information

Primary reference:
57761. D. M. Martill, S. U. Vidovic, C. Howells and J. R. Nudds. 2016. The oldest Jurassic dinosaur: a basal neotheropod from the Hettangian of Great Britain. PLoS ONE 11(1):e0145713:1-38 [R. Butler/R. Butler/M. Carrano]