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Leptonectidae ✝

Description

Leptonectidae is a family of ichthyosaurs known from Late Triassic to Early Jurassic marine deposits in Europe. They were all small to medium-sized creatures, most noted for their very long, swordfish-like snouts, which could have been used like a weapon, slashing through schools of fish.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4818017https://www.gbif.org/species/4818017
PaleoBioDB ID (PBDB)150186https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=150186
Rankfamily
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Leptonectidae
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Ichthyosauria : Leptonectidae
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
familyLeptonectidaeMaisch 1998
Scientific NameLeptonectidae
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Leptonectidaefamilybelongs to Neoichthyosauriastated with evidenceMaisch and Matzke, 2000
Leptonectidaefamilybelongs to Leptonectoideastated without evidenceMcGowan and Motani, 2003
Leptonectidaefamilybelongs to Ichthyosauriastated without evidenceMaisch and Reisdorf, 2006
Leptonectidaefamilybelongs to Neoichthyosauriastated with evidenceMaisch, 2010
Leptonectidaefamilybelongs to Neoichthyosauriastated without evidenceLomax, 2017
Status (PBDB)extinct
Taxon Size (PBDB)3
First Recorded Appearance201 - 199 Ma
Early Jurassic
Last Recorded Appearance201 - 199 Ma
Early Jurassic
Environmentmarine (based on Ichthyosauria)
Motilityactively mobile (based on Ichthyosauria)
Dietcarnivore (based on Ichthyosauria)
Reproductionviviparous (based on Ichthyosauria)
Taphonomyhydroxylapatite (based on Ichthyosauria)
Primary Reference (PBDB)M. W. Maisch and A. G. Reisdorf. 2006. Evidence for the longest stratigraphic range of a post-Triassic Ichthyosaur: a Leptonectes tenuirostris from the Pliensbachian (Lower Jurassic) of Switzerland. Geobios 39:491-505
Wikipediahttps://en.wikipedia.org/wiki/Leptonectidae

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Leptonectes
genus
accepted (GBIF)
listed (PBDB)
19209 Ma
Late/Upper Triassic
183 Ma
Early Jurassic

Synonymy List

YearName and Author
1998Leptonectidae Maisch
1999Eurhinosauria Motani p. 482
2000Leptonectidae Maisch and Matzke p. 98
2003Leptonectidae McGowan and Motani
2006Leptonectidae Maisch and Reisdorf
2010Leptonectidae Maisch
2017Leptonectidae Lomax
2017Leptonectidae Moon

References

Maisch M. W., Reisdorf A. G. (2006) Evidence for the longest stratigraphic range of a post-Triassic Ichthyosaur: a Leptonectes tenuirostris from the Pliensbachian (Lower Jurassic) of Switzerland, Geobios 39, 491-505
Motani R. (1999) Phylogeny of the Ichthyopterygia, Journal of Vertebrate Paleontology 19 3, 473-496
Maisch M. W., Matzke A. T. (2000) The Ichthyosauria, Stuttgarter Beitrage zur Naturkunde, Serie B (Geologie und Palaontologie) 298, 1-159
Maisch M. W. (2010) Phylogeny, systematics, and origin of the Ichthyosauria - the state of the art, Palaeodiversity 3, 151-214
Lomax D. R. (2017) A new leptonectid ichthyosaur from the Lower Jurassic (Hettangian) of Nottinghamshire, England, UK, and the taxonomic usefulness of the ichthyosaurian coracoid, Journal of Systematic Palaeontology 15 5, 387-401 doi:10.1080/14772019.2016.1183149
Moon B. C. (2017) A new phylogeny of ichthyosaurs (Reptilia: Diapsida), Journal of Systematic Palaeontology doi:10.1080/14772019.2017.1394922
The Paleobiology Database (2010 version). - 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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