Clovesuurdameredeor

Clovesuurdameredeor; Temporal range: Bathonian, 168.3–166.1 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Holotype skull
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Suborder:	† Thalattosuchia
Family:	† Machimosauridae
Genus:	† Clovesuurdameredeor ; Johnson et al., 2020
Species:	†C. stephani
Binomial name
	†Clovesuurdameredeor stephani; (Hulke, 1867)
Synonyms
	Steneosaurus stephaniHulke, 1867;

Last updated September 30, 2025

Clovesuurdameredeor (meaning "sea creature of Closworth"; from the Medieval Latin Clovesuurda and the Old English meredeor) is an extinct genus of machimosaurid teleosauroid from the Bathonian Cornbrash Formation of England.^[1]

The type species, C. stephani, was originally named "Steneosaurus" stephani by Hulke in 1867.^[2] Vignaud (1995) considered S. stephani to be a minor synonym of Yvridiosuchus boutilieri (then still in the genus Steneosaurus ),^[3] but Johnson (2019) and Johnson et al. (2020) discovered that S. stephani was a basal machimosaur that was separate from Yvridiosuchus, erecting the genus Clovesuurdameredeor for this.^[4]^[1]

References

1 2 Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8 e9808. doi: 10.7717/peerj.9808 . PMC 7548081 . PMID 33083104.
↑ Hulke, JW, "Gharial skull from the Cornbrash of Closworth." Proceedings of the Dorset Natural History and Antiquarian Field Club, 1877, p. 29
↑ Vignaud, P., "The Thalattosuchia, Mesozoic marine crocodiles: phylogenetic systematics, paleoecology, biochronology and palaeogeographical implications." Unpublished PhD thesis, University of Poitiers, 1995, p.410
↑ Johnson, Michela Maria Angeline (2019). "The taxonomy, systematics and ecomorphological diversity of Teleosauroidea (Crocodylomorpha, Thalattosuchia), and the evaluation of the genus 'Steneosaurus'". Archives of the University of Edinburgh .

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[Teleosauroidea-1] 1 2 Johnson, Michela M.; Young, Mark T.; Brusatte, Stephen L. (2020). "The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution". PeerJ. 8 e9808. doi: 10.7717/peerj.9808 . PMC 7548081 . PMID 33083104.

[2] Hulke, JW, "Gharial skull from the Cornbrash of Closworth." Proceedings of the Dorset Natural History and Antiquarian Field Club, 1877, p. 29

[3] Vignaud, P., "The Thalattosuchia, Mesozoic marine crocodiles: phylogenetic systematics, paleoecology, biochronology and palaeogeographical implications." Unpublished PhD thesis, University of Poitiers, 1995, p.410

[4] Johnson, Michela Maria Angeline (2019). "The taxonomy, systematics and ecomorphological diversity of Teleosauroidea (Crocodylomorpha, Thalattosuchia), and the evaluation of the genus 'Steneosaurus'". Archives of the University of Edinburgh .

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