Tilgate Forest, Cuckfield (Cretaceous of the United Kingdom)

Where: England, United Kingdom (51.1° N, 0.2° W: paleocoordinates 41.9° N, 9.5° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Grinstead Clay Member (Tunbridge Wells Sand Formation), Late/Upper Valanginian (140.2 - 136.4 Ma)

• 'Hastings Beds' now a subgroup that includes the Ashdown Formation, the Wadhurst Clay Formation and the Tunbridge Wells Sand Formation. Bed is the "Tilgate Grit."

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; brown, yellow sandstone

• "fawn-coloured sandstone"; "arenaceous strata"

Size class: macrofossils

Collected by G. Mantell & P. Fuller in 1820-1822, 1832-1850; reposited in the BMNH

Collection methods: quarrying, peel or thin section,

• Hylaeosaurus type found by found by Peter Fuller of Lewes. Sauropod humerus discovered in 1847 by Mr. Peter Fuller of Lewes; caudals found some years before by Mantell "collected from the same quarry" (ref 57075).

Primary reference: G. A. Mantell. 1822. The Fossils of the South Downs; or Illustrations of the Geology of Sussex 1-327 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52258: authorized by Matthew Carrano, entered by Matthew Carrano on 02.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines - Pleurosternidae
Pleurosternon sp.8 Owen 1853 turtle
isolated shell fragments
 Testudines -
"Chelone belli n. sp." = Hylaeochelys belli11, "Hylaeochelys belli" = Hylaeochelys belli8, "Archaeochelys valdensis n. gen. n. sp." = Hylaeochelys belli5, "Platemys mantelli n. sp." = Hylaeochelys belli9
"Chelone belli n. sp." = Hylaeochelys belli11 Mantell 1844 turtle
Includes BMNH 36529 (holotype costal plate fragment)
"Hylaeochelys belli" = Hylaeochelys belli8 Mantell 1844 turtle
BMNH 37715 (2nd or 4th costal)
"Archaeochelys valdensis n. gen. n. sp." = Hylaeochelys belli5 Mantell 1844 turtle
BMNH 3532 (holotype hyoplastral), 3533, 3506, 3529, 43626x
"Platemys mantelli n. sp." = Hylaeochelys belli9 Mantell 1844 turtle
BMNH 2288 (holotype right hyoplastral)
 Testudines - Pantestudinidae
Chelone costata n. sp.9 Owen 1853 turtle
BMNH 2370 (holotype partial carapace); BMNH 2298 (right hyoplastral)
 Testudines - Panchelidae
Platemys dixoni n. sp.9 Owen 1853 sideneck turtle
BMNH 2289 (holotype left hyoplastral)
 Testudinata - Helochelydridae
"Trionyx bakewelli n. sp." = Helochelydra bakewelli5
"Trionyx bakewelli n. sp." = Helochelydra bakewelli5 Mantell 1833 turtle
Type specimen (BMNH 2265: costal) plus NHMUK 2275x (L xiphiplastron); NHMUK 2276 (median part of R hyoplastron); NHMUK 3528 (proximal costal); NHMUK 3543a (2 plastral fragments); NHMUK 3598 (isolated R epiplastron); NHMUK 26029 (shell fragment); NHMUK 3507 (shell fragment); NHMUK 3509 (shell fragment); NHMUK 3510 (shell fragment); NHMUK 3511 (shell fragment); NHMUK 3521 (shell fragment); NHMUK 3524 (shell fragment); NHMUK 3531 (small shell fragment); NHMUK 28411 (shell fragment).
 Saurischia -
Bothriospondylus elongatus n. sp.10 Owen 1875 sauropod
BMNH 2239, dorsal vertebra
Theropoda indet.2 Marsh 1881 theropod
 Ornithischia - Nodosauridae
Polacanthus sp.3, "Hylaeosaurus oweni n. sp." = Hylaeosaurus armatus4, "Hylaeosaurus oweni" = Hylaeosaurus armatus4
Polacanthus sp.3 Fox 1866 ornithischian
BMNH R.4134
"Hylaeosaurus oweni n. sp." = Hylaeosaurus armatus4 Mantell 1833 ornithischian
BMNH 3775, partial skeleton
"Hylaeosaurus oweni" = Hylaeosaurus armatus4 Mantell 1833 ornithischian
BMNH 3789
 Ornithischia -
Regnosaurus northamptoni n. gen. n. sp.7
Regnosaurus northamptoni n. gen. n. sp.7 Mantell 1848 ornithischian
BMNH 2422
 Neornithischia -
"Iguanosaurus sp. n. gen." = Iguanodon1
"Iguanosaurus sp. n. gen." = Iguanodon1 Mantell 1825 bird foot dinosaur
 Plesiosauria -