Vectis Formation

Vectis Formation
Stratigraphic range: Barremian ~125  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Wealden Group
Sub-units	Shepherds Chine, Barnes High Sandstone & Cowleaze Chine Members
Underlies	Atherfield Clay Formation
Overlies	Wessex Formation
Thickness	Up to 66 m (217 ft)
Lithology
Primary	Siltstone, mudstone
Other	Sandstone, limestone, ironstone
Location
Coordinates	50°42′N1°06′W / 50.7°N 1.1°W / 50.7; -1.1
Approximate paleocoordinates	40°48′N9°42′E / 40.8°N 9.7°E / 40.8; 9.7
Region	England
Country	United Kingdom
Extent	Dorset, Isle of Wight
Vectis Formation (England)

The Vectis Formation is a geological formation on the Isle of Wight and Swanage, England whose strata were formed in the Barremian, approximately 125 million years ago. ^{[1] [2]} The environment of deposition was that of a freshwater coastal lagoon with occasional marine influence after the early Aptian marine transgression, transitioning from the floodplain environment of the underlying Wessex Formation. The primary lithology is of laminated grey mudstones. The Vectis Formation is composed of three geological members: the Shepherds Chine member, the Barnes High Sandstone member, and the Cowleaze Chine member. It is overlain by the fully marine Atherfield Clay Formation, part of the Lower Greensand Group. Dinosaur remains are among the fossils that have been recovered from the formation. ^[3]

Fauna

• Theropod tracks ^[3]
• Polacanthus foxii ^[3]
• Hypsilophodon foxii ^[3]
• Euornithopoda indet. ^[3]
• Euornithopod tracks ^[3]
• Mantellisaurus atherfieldensis ^[3]
• Spinosaurinae indet. ^[4]
• Vectocleidus pastorum ^[5]
• Hylaeochampsa vectiana ^[6]

See also

• List of dinosaur-bearing rock formations

References

1. "Magnetostratigraphy of the Lower Cretaceous Vectis Formation (Wealden Group) on the Isle of Wight, Southern England."
2. Batten, D. J. (ed.) 2011. English Wealden Fossils. The Palaeontological Association, London.
3. Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 556-563. ISBN   0-520-24209-2.
4. Barker CT, Lockwood JA, Naish D, Brown S, Hart A, Tulloch E, Gostling NJ (2022). "A European giant: a large spinosaurid (Dinosauria: Theropoda) from the Vectis Formation (Wealden Group, Early Cretaceous), UK". PeerJ. 10: e13543. doi: 10.7717/peerj.13543 . PMC   9188774 . PMID   35702254.
5. Benson, Roger B. J.; Ketchum, Hilary F.; Naish, Darren; Turner, Langan E. (11 December 2012). "A new leptocleidid (Sauropterygia, Plesiosauria) from the Vectis Formation (Early Barremian–early Aptian; Early Cretaceous) of the Isle of Wight and the evolution of Leptocleididae, a controversial clade" . Journal of Systematic Palaeontology. 11 (2): 233–250. doi:10.1080/14772019.2011.634444. S2CID   18562271.
6. Clark; Norell, James; Mark (January 1992). "The Early Cretaceous crocodylomorph Hylaeochampsa vectiana from the Wealden of the Isle of Wight". American Museum Novitates: 19.