Sandownia harrisi, a highly derived trionychoid turtle (Testudines: Cryptodira) from the Early Cretaceous of the Isle of Wight, England

Eucamerotus foxi is a macronarian sauropod from the Wessex Formation (Early Cretaceous, Barremian) of the Isle of Wight. It is represented by NHMUK R2522, a partial dorsal neural arch, and differs from other known sauropods by the presence of a stout robust prezygoparapophyseal lamina (PRPL) which bifurcates distally. NHMUK R90 are a pair of dorsal vertebrae also from the Wessex Formation which have been designated as paratypes of E. foxi. Both NHMUK R2522 and NHMUK R90 have traditionally been regarded as either basal titanosauriformes or of brachiosaurid affinities. Here, phylogenetic analysis using the Lusotitan Standard Discrete Matrix recovered NHMUK R90 as a non-titanosaurian somphospondylan nested in a clade made up of ((Tastavinsaurus (Chubutisaurus, Angolatitan, NHMUK R90)) though Bremer support for this group was low. Analyses recovered E. foxi as a neosauropod of uncertain affinities with little resolution throughout the tree. NHMUK R90 is recognised as being distinct from E. foxi based on the lack of a robust distally bifurcated PRPL and is likely representative of a new sauropod taxon. E. foxi is here retained as a valid species of basal macronarian.

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The ‘dermal armour’ of the ornithopod dinosaur Hypsilophodon from the Wealden (Early Cretaceous: Barremian) of the Isle of Wight: a reappraisal

Cretaceous Research ◽

10.1016/j.cretres.2008.02.002 ◽

2008 ◽

Vol 29 (4) ◽

pp. 636-642 ◽

Cited By ~ 10

Author(s):

Richard J. Butler ◽

Peter M. Galton

Keyword(s):

Early Cretaceous ◽

Isle Of Wight

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A new discovery of early Cretaceous (Wealden) amber from the Isle of Wight

Geological Magazine ◽

10.1017/s0016756800023207 ◽

1993 ◽

Vol 130 (6) ◽

pp. 847-850 ◽

Cited By ~ 17

Author(s):

Christopher J. Nicholas ◽

Alison A. Henwood ◽

Martin Simpson

Keyword(s):

Early Cretaceous ◽

Infrared Spectra ◽

Plant Material ◽

Iron Pyrite ◽

Isle Of Wight ◽

Southwest Coast ◽

The World ◽

New Discovery

AbstractA new discovery of in situ amber is reported from the southwest coast of the Isle of Wight. The productive site is located within the Wealden Marls (Wessex Formation), generally regarded to be of earliest Barremian (early Cretaceous) age; also making this amber amongst some of the oldest known occurrences in the world. Amber globules can be found within two thin, black lignite horizons which form a channel-lag deposit exposed in the cliffssoutheast of Chilton Chine. Examination of plant material above and below this site by other workers, combined with infrared spectra of the amber in this study, implies a coniferous (possibly taxodiaceous) origin for this resin. Palaeoenviron-mental interpretation of the Chilton Chine site suggests that the amber was exuded locally, and in some cases the globules have beenpartly replaced by iron pyrite.

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Marine tethysuchian crocodyliform from the ?Aptian-Albian (Early Cretaceous) of the Isle of Wight, England

10.31233/osf.io/p28ru ◽

2017 ◽

Author(s):

Mark T. Young ◽

Lorna Steel ◽

Davide Foffa ◽

Trevor Price ◽

Darren Naish ◽

...

Keyword(s):

Early Cretaceous ◽

Future Study ◽

Anterior Region ◽

Insufficient Evidence ◽

Isle Of Wight ◽

Incertae Sedis ◽

The Right ◽

Geological Range

A marine tethysuchian crocodyliform from the Isle of Wight, most likely from the Upper Greensand Formation (late Albian, Early Cretaceous), is described. However, we cannot preclude it being from the Ferruginous Sands Formation (late Aptian), or more remotely, the Sandrock Formation (late Aptian-early Albian). The specimen consists of the anterior region of the right dentary, from the tip of the dentary to the incomplete fourth alveolus. This specimen increases the known geological range of marine tethysuchians back into the late Early Cretaceous. While we refer it to Tethysuchia incertae sedis, there are seven anterior dentary characteristics which suggest a possible relationship with the Maastrichtian-Eocene clade Dyrosauridae. We also review 'middle' Cretaceous marine tethysuchians, including putative Cenomanian dyrosaurids. We conclude that there is insufficient evidence to be certain that any known Cenomanian specimen can be safely referred to Dyrosauridae, as there are some cranial similarities between basal dyrosaurids and Cenomanian-Turonian marine 'pholidosaurids'. Future study of middle Cretaceous tethysuchians could help unlock the origins of Dyrosauridae and improve our understanding of tethysuchian macroevolutionary trends.

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