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Acamptonectes

Description

Acamptonectes is an extinct genus of ophthalmosaurid ichthyosaur known from England and Germany. Acamptonectes is one of only eight genera of ichthyosaurs known to have existed into the Cretaceous. Fossils have been collected from the Hauterivian stage of England and Germany and from the Cambridge Greensand Formation, eastern United Kingdom, dating to late Albian or early Cenomanian stage, of the Early Cretaceous-Late Cretaceous boundary. Acamptonectes was first described in 2012 and the type species is Acamptonectes densus.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)8580079https://www.gbif.org/species/8580079
PaleoBioDB ID (PBDB)212184https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=212184
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Ophthalmosauridae : Acamptonectes
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Ichthyosauria : Ophthalmosauridae : Acamptonectes
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-IchthyosauromorphaMotani et al. 2015
-IchthyosauriformesMotani et al. 2015
-Ichthyopterygia
-EoichthyosauriaMotani 1999
-Ichthyosauria
-ParvipelviaMotani 1999
-NeoichthyosauriaSander 2000
-ThunnosauriaMotani 1999
-BaracromiaFischer et al. 2013
familyOphthalmosauridaeAppleby 1956
subfamilyOphthalmosaurinaeBaur 1887
genusAcamptonectesFischer Maisch Naish Kosma Liston Joger Krüger Pérez Tainsh & Appleby 2012
Scientific NameAcamptonectes Fischer, Maisch, Naish, Kosma, Liston, Joger, Krüger, Pérez, Tainsh & Appleby, 2012
Name Published InArticle title: New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic-Cretaceous boundary.
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Acamptonectesgenusbelongs to Ophthalmosaurinaestated with evidenceFischer et al., 2012
Acamptonectesgenusbelongs to Ophthalmosauridaestated with evidenceFischer et al., 2013
Acamptonectesgenusbelongs to Ophthalmosaurinaestated with evidenceArkhangelsky and Zverkov, 2014
Status (PBDB)extinct
Taxon Size (PBDB)2
First Recorded Appearance136 - 130 Ma
Early/Lower Cretaceous
Last Recorded Appearance133 - 129 Ma
Early/Lower Cretaceous
Environmentmarine (based on Ichthyosauria)
Motilityactively mobile (based on Ichthyosauria)
Dietcarnivore (based on Ichthyosauria)
Reproductionviviparous (based on Ichthyosauria)
Taphonomyhydroxylapatite (based on Ichthyosauria)
Primary Reference (PBDB)V. Fischer, M. W. Maisch, and D. Naish, R. Kosma, J. Liston, U. Joger, F. J. Krüger, J. Pardo Pérez, J. Tainsh, R. M. Appleby. 2012. New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary. PLoS One 7(1):e29234
Wikipediahttps://en.wikipedia.org/wiki/Acamptonectes

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Acamptonectes densus
species
doubtful (GBIF)
listed (PBDB)
3136 Ma
Early/Lower Cretaceous
133 Ma
Early/Lower Cretaceous

Synonymy List

YearName and Author
2012Acamptonectes Fischer et al.
2013Acamptonectes Fischer et al.
2014Acamptonectes Arkhangelsky and Zverkov
2014Acamptonectes Robert et al. p. 22 fig. 15

References

Fischer V., Maisch M. W., et al (2012) New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary, PLoS One 7 1, e29234 doi:10.1371/journal.pone.0029234
Fischer V., Appleby R. M., et al (2013) A basal thunnosaurian from Iraq reveals disparate phylogenetic origins for Cretaceous ichthyosaurs, Biology Letters 98 4, 20130021 doi:10.1098/rsbl.2013.0021
Arkhangelsky M. S., Zverkov N. G. (2014) On a new ichthyosaur of the genus Undurosaurus, Proceedings of the Zoological Institute RAS 318 5, 187-196
Robert A. J., Druckenmiller P. S., et al (2014) A new Upper Jurassic ophthalmosaurid ichthyosaur from the Slottsmøya Member, Agardhfjellet Formation of central Spitsbergen, PLoS One 9 8, 1-24 doi:10.1371/journal.pone.0103152
inferred from original work (title) - via The Interim Register of Marine and Nonmarine Genera
inferred from original work (title)/web search (AJR) - via The Interim Register of Marine and Nonmarine Genera
refer original publication - via The Interim Register of Marine and Nonmarine Genera
www.organismnames.com (Mar 2015) / web search - via The Interim Register of Marine and Nonmarine Genera
Article title: New ophthalmosaurid ichthyosaurs from the European Lower Cretaceous demonstrate extensive ichthyosaur survival across the Jurassic-Cretaceous boundary. - via The Interim Register of Marine and Nonmarine Genera
PLoS ONE 7(1): -. [e29234, 1-23] - via The Interim Register of Marine and Nonmarine Genera
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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