Cambridge Greensand
The Cambridge Greensand is a geological formation in England whose strata date back to the Albian and Cenomanian stages of the Late Cretaceous. It forms the transitional bed between the Gault Formation and the Chalk Group in the vicinity of Cambridgeshire, and technically forms the lowest member bed of the West Melbury Marly Chalk Formation.[1] The lithology is made out of glauconitic marl, with a concentration of phosphatic nodules and bones at the base. Dinosaur remains are among the fossils that have been recovered from the formation.[2]
Cambridge Greensand Stratigraphic range: Albian–Cenomanian | |
---|---|
Type | Geological Formation |
Underlies | Chalk Group |
Overlies | Gault Formation |
Thickness | 0.1-1 m |
Lithology | |
Primary | Glauconitic marl |
Other | Phosphorite |
Location | |
Region | England |
Country | ![]() |
Extent | North Hertfordshire and Cambridgeshire |
Type section | |
Named for | Cambridge |
Location | Arlesey Brickpit |
Vertebrate paleofauna
Dinosaurs
Birds
Enaliornis barrette - "Braincases, vertebrae, pelvis [and] limb elements.."[3]
Enaliornis sedgwicki - "Hindlimb elements."[3]
Enaliornis seeleyi - "Assorted cranial and postcranial elements"
Ornithischians
Anoplosaurus curtonotus - "Partial postcranium."[4]
Anoplosaurus major - "Cervical vertebrae."[4] "Vertebrae."[5]
Acanthopholis eucercus - "[Two] caudal centra."[4]
Acanthopholis platypus (in part) - "Phalanx, caudal centra."[4]
Acanthopholis macrocercus (aka Syngonosaurus) - "Osteoderms."[4] "Vertebrae, fragmentary skeleton elements."[5]
Acanthopholis stereocercus - "Osteoderms."[4] "Vertebrae."[5]
Eucercosaurus tanyspondylus - "Vertebrae."[4]
Trachodon cantabrigiensis - "Dentary tooth."[6]
Acanthopholis platypus (in part) - "Metatarsals I-V."[7]
Saurischians
Macrurosaurus semnus - "Caudal vertebrae"[7]
Pterosaurs
Amblydectes crassidens
Camposipterus colorhinus
Camposipterus nasutus
Camposipterus sedgwickii
Lonchodraco machaerorhynchus
Lonchodraco microdon
Ornithocheirus simus
"Ornithocheirus" capito
"Ornithocheirus" denticulatus
"Ornithocheirus" platystomus
"Ornithocheirus" polyodon
Ornithostoma sedgwicki
See also
- List of dinosaur-bearing rock formations
References
- http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=CBG
- 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.
- "Table 11.1," in Weishampel, et al. (2004). Page 215.
- "Table 17.1," in Weishampel, et al. (2004). Page 367.
- "Table 19.1," in Weishampel, et al. (2004). Page 417.
- "Table 20.1," in Weishampel, et al. (2004). Page 443.
- "Table 13.1," in Weishampel, et al. (2004). Page 270.
- Taissa Rodrigues & Alexander Wilhelm Armin Kellner (2013). "Taxonomic review of the Ornithocheirus complex (Pterosauria) from the Cretaceous of England". ZooKeys. 308: 1–112. doi:10.3897/zookeys.308.5559. PMC 3689139. PMID 23794925.
- Unwin D.M., 2001, "An overview of the pterosaur assemblage from the Cambridge Greensand (Cretaceous) of Eastern England", Mitteilungen aus dem Museum für Naturkunde in Berlin, Geowissenschaftliche Reihe 4: 189–221
- Averianov A.O. (2012). "Ornithostoma sedgwicki – valid taxon of azhdarchoid pterosaurs". Proceedings of the Zoological Institute RAS. 316 (1): 40–49.
- Valentin Fischer; Nathalie Bardet; Myette Guiomar & Pascal Godefroit (2014). "High Diversity in Cretaceous Ichthyosaurs from Europe Prior to Their Extinction". PLoS ONE. 9 (1): e84709. doi:10.1371/journal.pone.0084709. PMC 3897400. PMID 24465427.