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Aspideretes

Description

Nilssonia is a genus of softshell turtles (family Trionychidae) from rivers, streams, ponds, and lakes in South Asia and Burma. In many treatments, it is monotypic, with the single species Burmese peacock softshell (N. formosa). However, the supposed other genus of peacock softshells, Aspideretes, is more closely related to N. formosa than had been believed. They differ only in the neural plates between the first pleural scale pair of the bony carapace, which are fused into one in N. formosa and unfused in the others.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)2442633https://www.gbif.org/species/2442633
PaleoBioDB ID (PBDB)37675https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37675
Rankgenus
Taxonomy (GBIF,PBDB)Life : Animalia : Chordata : Reptilia : Testudines : Trionychidae : Aspideretes
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
-Testudinata
orderTestudinesBatsch 1788
familyTrionychidaeGray 1825
genusAspideretesHay 1904
Scientific NameAspideretes Hay, 1904
Name Published InProc. Amer. Philos. Soc., 42
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Aspideretesgenusbelongs to Trionychidaestated with evidenceHay, 1908
Aspideretesgenusbelongs to Trionychidaestated without evidenceLambe, 1914
Aspideretesgenusbelongs to Trionychidaestated with evidenceGilmore, 1919
Aspideretesgenusbelongs to Trionychidaestated without evidenceGilmore, 1935
Aspideretesgenusbelongs to Trionychidaestated with evidenceYeh, 1963
Aspideretessubgenusbelongs to Trionyxstated without evidenceYeh, 1974
Aspideretesgenusbelongs to Trionychidaestated with evidenceCarpenter, 1981
Aspideretesgenusbelongs to TrionychidaeimpliedCarroll, 1988
Aspideretesgenusbelongs to Trionychinaestated without evidenceWeems, 1988
Aspideretesgenusbelongs to Trionychidaestated without evidenceHutchison, 1992
Aspideretesgenusbelongs to Trionychinaestated without evidenceHolroyd and Hutchison, 2002
Status (PBDB)extant
Taxon Size (PBDB)7
Extant Size (PBDB)5 (71%)
First Recorded Appearance145 - 101 Ma
Early/Lower Cretaceous
Environmentfreshwater
Motilityactively mobile (based on Trionychidae)
Dietcarnivore
Reproductionoviparous (based on Trionychidae)
Ecospace Commentslength about 540 mm (shell only) or 730 mm (including flesh), estimated from text figure
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)R. L. Carroll. 1988. Vertebrate Paleontology and Evolution
Common Name(s) Indian Softshell Turtles
Wikipediahttps://en.wikipedia.org/wiki/Aspideretes

External Images

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Aspideretes alashanensis
species
accepted (GBIF)No associated record in PBDB
Aspideretes amnigenus
species
accepted (GBIF)No associated record in PBDB
Aspideretes fuchienensis
species
accepted (GBIF)No associated record in PBDB
Aspideretes gangeticus
species
listed (PBDB)Indian Softshell0 Ma
Extant
Aspideretes hurum
species
listed (PBDB)Indian Peacock Softshell0 Ma
Extant
Aspideretes impressus
species
accepted (GBIF)No associated record in PBDB
Aspideretes leithii
species
listed (PBDB)Leith's Softshell0 Ma
Extant
Aspideretes maortuensis
species
accepted (GBIF)No associated record in PBDB
Aspideretes muyuensis
species
accepted (GBIF)No associated record in PBDB
Aspideretes nigricans
species
listed (PBDB)Black Softshell0 Ma
Extant
Aspideretes perplexus
species
accepted (GBIF)No associated record in PBDB
Aspideretes sculptus
species
accepted (GBIF)No associated record in PBDB
Aspideretes sinuosus
species
accepted (GBIF)
listed (PBDB)
15.33 Ma
Miocene
5.33 Ma
Miocene
Aspideretes superstes
species
accepted (GBIF)No associated record in PBDB
Aspideretes vagans
species
accepted (GBIF)No associated record in PBDB
Trionyx (Aspideretes) fuchienensis
species
listed (PBDB)1145 Ma
Late Jurassic
145 Ma
Late Jurassic

Obsolete Names

NameSourceTaxon RankTaxonomy
Aspiderites (Hay, 1904)GBIFgenusAnimalia : Chordata : Reptilia : Testudines : Trionychidae : Aspiderites

Synonymy List

YearName and Author
1904Aspideretes Hay
1908Aspideretes Hay pp. 495-496
1914Aspideretes Lambe p. 11
1919Aspideretes Gilmore p. 129
1930Aspideretes Russell
1935Aspideretes Gilmore p. 182
1963Aspideretes Yeh
1964Aspideretes Estes p. 98
YearName and Author
1974Trionyx (Aspideretes) Yeh p. 190
1981Aspideretes Carpenter p. 457
1988Aspideretes Carroll
1988Aspideretes Weems p. 118
1992Aspideretes Hutchison
1996Aspideretes Frank and Ramus
2002Aspiderites Holroyd and Hutchison p. 181

References

Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698
Hay O. P. (1908) The fossil turtles of North America, Carnegie Institution of Washington Publication 75, 1-568
Lambe L. M. (1914) On new species of Aspideretes from the Belly River formation of Alberta, with further information regarding the structure of the carapace of Boremys pulchra, Proceedings and Transactions of the Royal Society of Canada, series 3 8, 11-16
Gilmore C. W. (1919) New fossil turtles, with notes on two described species, Proceedings of the United States National Museum 56 2282, 113-132
Russell L. S. (1930) A new species of Aspideretes from the Paskapoo Formation of Alberta, American Journal of Science 115, 27-32
Gilmore C. W. (1935) On the Reptilia of the Kirtland Formation of New Mexico, with descriptions of new species of fossil turtles, Proceedings of the United States National Museum 83 2978, 159-188
Yeh H. K. (1963) Fossil turtles of China, Palaeontologia Sinica, New Series C 150, 1-113
Estes R. (1964) Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming, University of California Publications in Geological Sciences 49, 1-187
Yeh H. -K. (1974) [A new fossil Tronyx from Fuchien], Vertebrata PalAsiatica 12 3, 190-192
Carpenter K. (1981) Preneural in the evolution of Trionyx, Copeia 1981 2, 456-457
Weems R. E. (1988) Paleocene turtles from the Aquia and Brightseat Formations, with a discussion of their bearing on sea turtle evolution and phylogeny, Proceedings of the Biological Society of Washington 101 1, 109-145
Hutchison J. H. (1992) Western North American reptile and amphibian record across the Eocene/Oligocene boundary and its climatic implications, D. R. Prothero and W. A. Berggren (eds.), Eocene-Oligocene Climatic and Biotic Evolution, 451-463
Frank N., Ramus E. (1996) A Complete Guide to Scientific and Common Names of Reptiles and Amphibians of the World, 1-377
Holroyd P. A., Hutchison J. H. (2002) Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component, Geological Society of America Special Paper 361, 177-190
CoL2006 - via The Interim Register of Marine and Nonmarine Genera
Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera
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
as per family - via The Interim Register of Marine and Nonmarine Genera
SN2000, PaleoDB - via The Interim Register of Marine and Nonmarine Genera
Proc. Amer. Philos. Soc., 42 - via The Interim Register of Marine and Nonmarine Genera
Turtle Taxonomy Working Group [van Dijk, P. P., J. Iverson, A. Rhodin, H. Shaffer, and R. Bour], 2014: Turtles of the World, 7th Edition: Annotated Checklist of Taxonomy, Synonymy, Distribution with maps, and Conservation Status. Chelonian Research Monographs, no. 5, v. 7. 329-479. - via Integrated Taxonomic Information System (ITIS)
Iverson, John B., 1992: null. A Revised Checklist with Distribution Maps of the Turtles of the World. xiii + 363. - via Integrated Taxonomic Information System (ITIS)
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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