Wesserpeton
Encyclopedia
Wesserpeton is an extinct genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of albanerpetontid amphibian
Amphibian
Amphibians , are a class of vertebrate animals including animals such as toads, frogs, caecilians, and salamanders. They are characterized as non-amniote ectothermic tetrapods...

 known from the Isle of Wight
Isle of Wight
The Isle of Wight is a county and the largest island of England, located in the English Channel, on average about 2–4 miles off the south coast of the county of Hampshire, separated from the mainland by a strait called the Solent...

, southern England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

.

Description

Wesserpeton is known from the holotype
Holotype
A holotype is a single physical example of an organism, known to have been used when the species was formally described. It is either the single such physical example or one of several such, but explicitly designated as the holotype...

 NHMUK PV R36521, nearly complete fused frontals and from the referred materials NHMUK PV R36522–36568 and R36595–36611. All specimens were collected from seven localities of the Wessex Formation
Wessex Formation
The Wessex Formation is an English fossil site and geological formation that dates to the Barremian stage of the Early Cretaceous. It is part of the Wealden Group and underlies the younger Vectis Formation.-Invertebrates:...

 on the southeastern coast of the Isle of Wight
Isle of Wight
The Isle of Wight is a county and the largest island of England, located in the English Channel, on average about 2–4 miles off the south coast of the county of Hampshire, separated from the mainland by a strait called the Solent...

 of southern England. The type locality (Bed 38) is exposed at Yaverland
Yaverland
Yaverland is a village on the Isle of Wight, just north of Sandown. It has about 200 houses. About 1/3 of a mile away from the village is the Yaverland Manor and Church. Holotype fossils have been discovered here of Yaverlandia and a pterosaur, Caulkicephalus...

 while the rest (Bed L2) are exposed high in the cliff at Sudmoor Point but have yeilded only NHMUK PV R36539, R36522 and R36553–36558. All specimens are dating to the Barremian
Barremian
The Barremian is an age in the geologic timescale between 130.0 ± 1.5 Ma and 125.0 ± 1.0 Ma). It is a subdivision of the Early Cretaceous epoch...

 stage of the Early Cretaceous
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...

.

Etymology

Wesserpeton was first named by Steven C. Sweetman and James D. Gardner in 2011
2011 in paleontology
-Lobopods:-Arachnids:-Insects:-Newly named jawless vertebrates:-Newly named acanthodian:-Newly named cartilaginous fishes:-Newly named bony fishes:-Newly named lepospondyls:-Newly named temnospondyls:-Newly named lissamphibians:...

 and the type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...

 is Wesserpeton evansae. The generic name is derived from Wess, from Wessex
Wessex
The Kingdom of Wessex or Kingdom of the West Saxons was an Anglo-Saxon kingdom of the West Saxons, in South West England, from the 6th century, until the emergence of a united English state in the 10th century, under the Wessex dynasty. It was to be an earldom after Canute the Great's conquest...

, an ancient British kingdom which included the Isle of Wight
Isle of Wight
The Isle of Wight is a county and the largest island of England, located in the English Channel, on average about 2–4 miles off the south coast of the county of Hampshire, separated from the mainland by a strait called the Solent...

, and ἑρπετόν, erpeton, Greek
Greek language
Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

 for "creeping animal" which used in the construction of the name of Albanerpeton
Albanerpeton
Albanerpeton is an extinct genus of salamander-like lissamphibian found in North America and Europe. Members of the genus have a robust head and neck which likely allowed them to actively burrow and they lived in a wide range of environments...

. The specific name honors Professor Susan E. Evans
Susan E. Evans
Susan E. Evans is British paleontologist and herpetologist. She is the author or co-author of over 100 peer-reviewed papers and book chapters....

 from the University College London
University College London
University College London is a public research university located in London, United Kingdom and the oldest and largest constituent college of the federal University of London...

 for contributing the research of microvertebrate palaeontology and the understanding of Albanerpetontidae
Albanerpetontidae
Albanerpetontodae is an extinct family of lissamphibians.-External links:*...

.
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