Compton Bay Comptonatus (Cretaceous of the United Kingdom)

Where: England, United Kingdom (50.7° N, 1.5° W: paleocoordinates 40.7° N, 9.6° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Wessex Formation (Wealden Group), Barremian (129.4 - 125.0 Ma)

• Upper part of the Wessex Formation, within the "plant debris bed", "middle" Barremian

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithified claystone

• Plant debris bed

Size class: macrofossils

Collected by N. CHase & S. Hutt in 2013

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

Primary reference: J. A. F. Lockwood, D. M. Martill, and S. C. R. Maidment. 2024. Comptonatus chasei, a new iguanodontian dinosaur from the Lower Cretaceous Wessex Formation of the Isle of Wight, southern England. Journal of Systematic Palaeontology 22(1):2346573 [E. Dunne/T. Forêt/T. Forêt]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 235576: authorized by Emma Dunne, entered by Tom Forêt on 18.07.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Equisetopsida
 Pinidae - Pinidae
Pseudofrenelopsis parceramosa Watson
frequently produces the trunks of large conifers, usually attributed to Pseudofrenelopsis parceramosa (Francis, 1987).
Reptilia
 Ornithischia -
Iguanodontia indet. Baur 1891 ornithopod
several very large, but fragmentary iguanodontian remains, including three pedal phalanges, a neural arch, and some rib sections (no specimen number).
Comptonatus chasei n. gen. n. sp. Lockwood et al. 2024 ornithopod
IWCMS 2014.80, an almost complete skel- eton composed of the following elements: right maxilla, right nasal fragment, both vomers, both quadrates, both squamosals, both prefrontals, both frontals, both postor- bitals, neurocranium, right dentary, left dentary fragments, left surangular, one loose dentary tooth, eight opisthocoelous presacral vertebrae, cervical rib frag- ment, 15 dorsal vertebrae including the sacrodorsal, dor- sal rib fragments, sacrum, 40 caudal vertebrae, 15 chevrons, both scapulae, both coracoids, both sternal bones, right humerus, left radius, left ulna, left carpus, left metacarpals III and IV, right metacarpals II and V, both pollices, left digit II manual phalanx 1, unsided digit II manual phalanx 2, right digit IV manual phalanx 1, both ilia, both pubes, both ischia, left femur, both tibiae, both fibulae, both astragali, right metatarsal II, left metatarsals II, III and IV, digit II: right pedal phal- anx 1, left pedal phalanges 1 and 2, digit III: right pedal phalanx 4, left pedal phalanges 1–4, and digit IV: left pedal phalanges 1–4.
 Crocodylia -
Crocodylia indet. Owen 1842 crocodilian
tooth (no specimen number)
Actinopteri
 Lepisosteiformes -
cf. Scheenstia sp. López-Arbarello and Sfercoa 2009 gar
Other vertebrate remains uncovered from the excavation site include ganoid fish scales (no specimen number)