''Clovesuurdameredeor'' (meaning "sea creature of
Closworth
Closworth is a village and civil parish in Somerset, England, south of Yeovil in the South Somerset district, on the border with Dorset. The village has a population of 220.
The parish includes the villages of Pendomer and Sutton Bingham, the lo ...
"; from the
Medieval Latin
Medieval Latin was the form of Literary Latin
Classical Latin is the form of Literary Latin recognized as a Literary language, literary standard language, standard by writers of the late Roman Republic and early Roman Empire. It was used f ...
''Clovesuurda'' and the
Old English ''meredeor'') is an extinct
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
of
machimosaurid
Machimosauridae is an extinct family of teleosauroid thalattosuchian crocodyliforms. Text was copied from this source, which is available under Creative Commons Attribution 4.0 International License The family was first identified in 2016, ...
teleosauroid
Teleosauroidea is an extinct superfamily of thalattosuchia
Thalattosuchia is a clade of marine crocodylomorphs from the Early Jurassic to the Early Cretaceous that had a cosmopolitan distribution. They are colloquially referred to as marine ...
from the
Bathonian
In the geologic timescale the Bathonian is an age and stage of the Middle Jurassic. It lasted from approximately 168.3 Ma to around 166.1 Ma (million years ago). The Bathonian Age succeeds the Bajocian Age and precedes the Callovian Age.
St ...
Cornbrash Formation
The Cornbrash Formation is a Middle Jurassic geological formation in England. It ranges in age from Bathonian to Callovian, the uppermost part of the Middle Jurassic. Dinosaur remains are among the fossils that have been recovered from the form ...
of
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...
.

The type species, ''C. stephani'', was originally named "''Steneosaurus''" ''stephani'' by
Hulke
John Whitaker Hulke FRCS FRS FGS (6 November 1830 – 19 February 1895) was a British surgeon, geologist and fossil collector. He was the son of a physician in Deal, who became a Huxleyite despite being deeply religious.
Hulke became Huxley' ...
in 1867. Vignaud (1995) considered ''S. stephani'' to be a minor synonym of ''
Yvridiosuchus boutilieri'' (then still in the genus ''
Steneosaurus
''Steneosaurus'' (from el, στενός , 'narrow' and el, σαῦρος , 'lizard') is a dubious genus of teleosaurid crocodyliform from the Middle or Late Jurassic (Callovian or early Oxfordian) of France. The genus has been used as a wa ...
''), 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.
References
Thalattosuchians
Fossil taxa described in 2020
Prehistoric pseudosuchian genera
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