Kimmeridge Bay, Mansel collection (Jurassic of the United Kingdom)

Where: England, United Kingdom (50.6° N, 2.1° W: paleocoordinates 41.3° N, 7.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Aulacostephanus autissidorensis and Pectinatites elegans ammonoid zone, Kimmeridge Clay Formation, Late/Upper Kimmeridgian (155.7 - 150.8 Ma)

• Outcrops of the Kimmeridge Clay formation are only Kimmeridgian age in Kimmeridge Bay itself.

•"According to Morgans-Bell et al. (2001) and Gallois (2000), this area exposes the Aulacostephanus autissidorensis and Pectinatites elegans ammonite zones of the formation" (Knutsen 2012, p. 269)

Environment/lithology: marine; mudstone

Size class: macrofossils

Collected by J. C. Mansel, Esq. in <1870; reposited in the BMNH

Collection methods: surface (float), surface (in situ), mechanical

• DORCM, Dorset County Museum, Dorchester, Dorset, England, United Kingdom

Primary reference: J. W. Hulke. 1870. Note on some plesiosaurian remains obtained by JC Mansel, Esq, FGS, in Kimmeridge Bay, Dorset. Quarterly Journal of the Geological Society 26:611-622 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119504: authorized by Roger Benson, entered by Roger Benson on 29.10.2011, edited by Jonathan Tennant and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Loricata - Teleosauridae
Teleosaurus megarhinus n. sp.2 Hulke 1871 marine crocodile
BMNH 43086
 Loricata - Metriorhynchidae
Plesiosuchus manselii5 Hulke 1870 marine crocodile
NHMUK PV OR40103– incomplete skull (snout and occiput – lacking occipital condyle – with fragments of the supratemporal arches) and isolated right articular. NHMUK PV OR40103a – the right mandibular ramus, some isolated teeth, a humerus, and numerous ribs and vertebrae that are partially or completely imbedded in matrix. Two further specimens may belong to the P. manselii holotype: NHMUK PV OR40104– an occipital condyle, and NHMUK PV OR40105– carpal and tarsal bones. Both specimens were donated to the University of Toronto through Professor Ramsay Wright in 1900. From examining the relevant register in the NHMUK Earth Sciences Department, it is possible both specimens were part of NHMUK PV OR40103 (as they are all part of the same acquisition, NHMUK PV OR40103 lacks the occipital condyle and NHMUK PV OR40103a does not include carpal or tarsal bones). Unfortunately, as neither specimen could be located at the Royal Ontario Museum (K. Seymour, 2011 pers. com.) it is impossible to assess whether they too belong to the holotype
 Sauropterygia -
Plesiosaurus brachistospondylus n. sp. Hulke 1870 plesiosaur
(holotype)
 Sauropterygia - Cryptoclididae
"Plesiosaurus manselii n. sp." = Colymbosaurus trochanterius
"Plesiosaurus manselii n. sp." = Colymbosaurus trochanterius Owen 1840 plesiosaur
BMNH 40106 (holotype postcranial skeleton), 40107 (left femur)
 Sauropterygia - Pliosauridae
Pliosaurus macromerus3 Phillips 1871 plesiosaur
DORCM G.123, hindlimb measuring 6 feet 7 inches long
Pliosaurus sp.1 Owen 1841 plesiosaur
BMNH 39362 (skull)
 Ichthyosauria - Ichthyosauridae
Ichthyosaurus enthekiodon n. sp.4 Hulke 1871 ichthyosaur
Complete skeleton