Melksham (Jurassic of the United Kingdom)

Where: Wiltshire, United Kingdom (51.4° N, 2.1° W: paleocoordinates 41.1° N, 8.3° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Oxford Clay Formation, Callovian (166.1 - 163.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: open shallow subtidal; claystone

Size class: macrofossils

• Foffa et al. 2017: The skull is dorsolaterally flattened with several disarticulated skull roof and rostral elements. The left mandible is preserved and exposed in lateral view. The right mandible is either lost or still embedded in the matrix. Several teeth, some of which are complete, are preserved in life-position on both skull and lower jaw.

Collection methods: Foffa et al. 2017: Specimen NHMUK PV OR 46797 was purchased in 1875 by the British Museum (Natural History), and it now resides in the NHMUK, as part of the Cunnington Collection.

Primary reference: D. Foffa, M. T. Young, S. L. Brusatte, M. R. Graham, and L. Steel. 2017. A new metriorhynchid crocodylomorph from the Oxford Clay Formation (Middle Jurassic) of England, with implications for the origin and diversification of Geosaurini. Journal of Systematic Palaeontology 16(13):1123-1143 [M. Uhen/M. Smith/G. Varnham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 190125: authorized by Mark Uhen, entered by Matthew Smith on 28.11.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Loricata - Metriorhynchidae
Ieldraan melkshamensis n. gen. n. sp.
Ieldraan melkshamensis n. gen. n. sp. Foffa et al. 2018 marine crocodile
Holotype: NHMUK PV OR 46797 (incomplete skull)