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Lagerpetonidae ✝

Description

The Lagerpetidae (originally Lagerpetonidae) is a family of basal dinosauromorphs. Members of the family are known from Late Triassic of Argentina, Arizona, Brazil, New Mexico, and Texas. Lagerpetids were typically small, although some, like Dromomeron gigas, were fairly large. Lagerpetid fossils are very rare, the most common finds are of the hindlimbs, which possessed a number of unique features.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4823039https://www.gbif.org/species/4823039
PaleoBioDB ID (PBDB)67918https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=67918
Rankfamily
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Lagerpetonidae
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Eosuchia : Lagerpetonidae
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
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-ArchosauriformesGauthier 1986
-EucrocopodaEzcurra 2016
-Archosauria
informalAvemetatarsaliaBenton 1999
-OrnithodiraGauthier 1986
-DinosauromorphaBenton 1985
familyLagerpetonidaeArcucci 1986
Scientific NameLagerpetonidae
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Lagerpetonidaefamilybelongs to Pseudosuchiastated without evidenceArcucci, 1986
Lagerpetonidaefamilybelongs to Lagosuchiastated without evidencePaul, 1988
Lagerpetonidaefamilybelongs to Dinosauromorphastated with evidenceNesbitt et al., 2009
Lagerpetonidaefamilybelongs to Dinosauromorphastated without evidenceMartz and Small, 2019
Status (PBDB)extinct
Taxon Size (PBDB)9
First Recorded Appearance242 - 237 Ma
Middle Triassic
Last Recorded Appearance209 - 201 Ma
Mesozoic
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)A. B. Arcucci. 1986. Nuevos materiales y reinterpretacion de Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) del Triasico Medio de La Rioja, Argentina [New specimens and reinterpretation of Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) from the Middle Triassic of La Rioja, Argentina]. Ameghiniana 23(3-4):233-242
Wikipediahttps://en.wikipedia.org/wiki/Lagerpetonidae

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Dromomeron
genus
accepted (GBIF)
listed (PBDB)
13228 Ma
Late/Upper Triassic
209 Ma
Late/Upper Triassic
Ixalerpeton
genus
accepted (GBIF)
listed (PBDB)
1237 Ma
Middle Triassic
237 Ma
Middle Triassic
Lagerpeton
genus
accepted (GBIF)
listed (PBDB)
4242 Ma
Middle Triassic
242 Ma
Middle Triassic

Obsolete Names

NameSourceTaxon RankTaxonomy
Lagerpetidae GBIFfamilyAnimalia : Chordata : Reptilia : Lagerpetidae

Synonymy List

YearName and Author
1986Lagerpetonidae Arcucci
1988Lagerpetonidae Paul p. 243
1991Lagerpetonidae Olshevsky p. 103
2009Lagerpetidae Nesbitt et al. p. 499
2011Lagerpetidae Nesbitt p. 208 fig. 52
2019Lagerpetidae Martz and Small p. 7

References

Arcucci A. B. (1986) Nuevos materiales y reinterpretacion de Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) del Triasico Medio de La Rioja, Argentina [New specimens and reinterpretation of Lagerpeton chanarensis Romer (Thecodontia, Lagerpetonidae nov.) from the Middle Triassic of La Rioja, Argentina], Ameghiniana 23 3-4, 233-242
Paul G. S. (1988) , Predatory Dinosaurs of the World. Simon & Schuster, New York, 1-464
Olshevsky G. (1991) A revision of the parainfraclass Archosauria Cope, 1869, excluding the advanced Crocodylia, Mesozoic Meanderings 2, 1-196
Nesbitt S. J., Irmis R. B., et al (2009) Hindlimb osteology and distribution of basal dinosauromorphs from the Late Triassic of North America, Journal of Vertebrate Paleontology 29 2, 498-516 doi:10.1671/039.029.0218
Nesbitt S. J. (2011) The early evolution of archosaurs: relationships and the origin of major clades, Bulletin of the American Museum of Natural History 353, 1-292
Martz J. W., Small B. J. (2019) Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae), PeerJ 7, e7551:1-71 doi:10.7717/peerj.7551
SN2000: Brands, S. J. (compiler) 1989-2005. Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Available online at http://sn2000.taxonomy.nl/. - via The Interim Register of Marine and Nonmarine Genera
Systema Naturae 2000 (2006 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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