Foreshore, Yaverland: Barremian, United Kingdom
collected by J. D. Winch and others 1995-2002
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Caulkicephalus trimicrodon n. gen., n. sp.
Steel et al. 2005
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1 individual | |||||||||
| Multiple specimens believed to represent a single individual, including IWCMS 2002.189.1, 2, 4, three contiguous elements that form the anterior portion of the rostrum (holotype). IWCMS 2002.189.3, 233, 234.1, 236, 237, 2003.2-4 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United Kingdom | State/province: | England | County: | Isle of Wight |
| Coordinates: | 50.7° North, 1.1° West (view map) | ||||
| Paleocoordinates: | 40.9° North, 9.6° East | ||||
| Basis of coordinate: | stated in text |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Barremian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Barremian | ||
| Age range of interval: | 125.77000 - 121.40000 m.y. ago |
Stratigraphy
| Geological group: | Wealden | Formation: | Wessex | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "The section exposed at Yaverland comprises the upper part of the Wessex Formation and the overlying Vectis Formation of the Wealden Group, with younger beds, representing a marine transgression, exposed to the north-east of the bay. Here the Wessex Formation is of Barremian (Early Cretaceous) age, and comprises a series of variegated mudstones with intermittent fluvial sandstones, silty clays and occasionally plant debris beds. The sequence represents a meander-belt floodplain system with pond and ephemeral lake deposits. The new pterosaur was obtained from one of the plant debris beds (Bed 33 of Radley, 1994)." | |||||
Lithology and environment
| Primary lithology: | conglomerate |
| Includes fossils? | Y |
| Lithology description: "Typically, the plant debris beds are patchily cemented by nodular siderite, contain abundant intraclasts and a high percentage of plant remains ranging from leaf fragments to logs several metres in length. Both lignite and fusain occur. Pyrite, siderite, calcite and barite are common diagenetic minerals but, unfortunately, the pyrite is unstable and prone to decay in damp conditions." | |
| Environment: | "floodplain" |
| Geology comments: "The plant debris beds are believed to be the result of intrabasinal flood events that transported plant debris and carcasses, depositing them on the floodplains" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Associated major elements: | all |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | J. D. Winch and others | Collection dates: | 1995-2002 |
| Collection method comments: IWCMS, Isle of Wight County Museum Service at Dinosaur Isle, Sandown, Isle of Wight | |||
Metadata
| Also known as: | Caulkicephalus holotype site | ||
| Database number: | 90342 | ||
| Authorizer: | R. Butler | Enterer: | R. Butler |
| Modifier: | R. Butler | Research group: | vertebrate |
| Created: | 2009-07-17 06:44:07 | Last modified: | 2010-12-16 07:58:31 |
| Access level: | the public | Released: | 2009-07-17 06:44:07 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 30342. | L. Steel, D. M. Martill, D. M. Unwin and J. D. Winch. 2005. A new pterodactyloid pterosaur from the Wessex Formation (Lower Cretaceous) of the Isle of Wight, England. Cretaceous Research 26:686-698 [R. Butler/R. Butler] |
Secondary references:
| 34541 | S. C. Sweetman and D. M. Martill. 2010. Pterosaurs of the Wessex Formation (Earl Cretaceous, Barremian) of the Isle of Wight, southern England: a review with new data. Journal of Iberian Geology 36(2):225-242 [R. Butler/R. Butler] |