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Nothrotheriidae ✝

Description

Nothrotheriidae is a family of extinct ground sloths that lived from approximately 11.6 mya—11,000 years ago, existing for approximately 11.49 million years. Previously placed within the tribe Nothrotheriini or subfamily Nothrotheriinae within Megatheriidae, they are now usually placed in their own family, Nothrotheriidae. Nothrotheriids appeared in the Tortonian, some 11.6 million years ago, in South America. The group includes the comparatively slightly built Nothrotheriops, which reached a length of about 2.75 metres (9.0 ft). While nothrotheriids were small compared to some of their megatheriid relatives, their claws provided an effective defense against predators, like those of larger anteaters today.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4834462https://www.gbif.org/species/4834462
PaleoBioDB ID (PBDB)134630https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=134630
Rankfamily (GBIF)
subfamily (PBDB)
Taxonomy (GBIF)Life : Animalia : Chordata : Mammalia : Pilosa : Nothrotheriidae
Taxonomy (PBDB)Life : Animalia : Chordata : Mammalia : Xenarthra : Nothrotheriidae
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
-SynapsidaOsborn 1903
-Therapsida
infraorderCynodontia
-EpicynodontiaHopson and Kitching 2001
infraorderEucynodontiaKemp 1982
-ProbainognathiaHopson 1990
-MammaliamorphaRowe 1988
-MammaliaformesRowe 1988
classMammaliaLinnaeus 1758
subclassTribosphenida
infraclassEutheria
-PlacentaliaOwen 1837
-AmericatheriaShockey 2017
-Xenarthra
-Phyllophaga
superfamilyMegalonychoidea
familyNothrotheriidaeAmeghino 1920
Scientific NameNothrotheriidae
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Nothrotheriidaesubfamilybelongs to Megalonychoideastated with evidenceMuizon et al., 2004
Nothrotheriidaefamilysubjective synonym of Nothrotheriidaestated with evidenceBrandoni, 2013
Nothrotheriidaesubfamilybelongs to Megatheriastated without evidenceAmson et al., 2016
Status (PBDB)extinct
Taxon Size (PBDB)34
First Recorded Appearance16.0 - 13.8 Ma
Miocene
Last Recorded Appearance0.13 Ma
Pleistocene
Environmentterrestrial (based on Eutheria)
Motilityactively mobile (based on Osteichthyes)
Dietherbivore (based on Phyllophaga)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)C. Muizon, H. G. McDonald, and R. Salas, M. Urbina. 2004. The youngest species of the aquatic sloth Thalassocnus and a reassesment of the relationships of the nothrothere sloths (Mammalia: Xenarthra). Journal of Vertebrate Paleontology 24(2):387-397
Wikipediahttps://en.wikipedia.org/wiki/Nothrotheriidae

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Nothrotheriinae
subfamily
listed (PBDB)2715.5 Ma
Miocene
0.13 Ma
Pleistocene
Aymaratherium
genus
listed (PBDB)16.80 Ma
Miocene
6.80 Ma
Miocene
Chasicobradys
genus
accepted (GBIF)
listed (PBDB)
110.00 Ma
Miocene
10.00 Ma
Miocene
Huilabradys
genus
accepted (GBIF)
listed (PBDB)
113.8 Ma
Miocene
13.8 Ma
Miocene
Neohapalops
genus
accepted (GBIF)
listed (PBDB)
19.00 Ma
Miocene
9.00 Ma
Miocene
Nothropus
genus
accepted (GBIF)
listed (PBDB)
22.59 Ma
Pleistocene
0.78 Ma
Pleistocene
Nothrotheriops
genus
accepted (GBIF)
listed (PBDB)
164.90 Ma
Pliocene
0.13 Ma
Pleistocene
Nothrotherium
genus
accepted (GBIF)
listed (PBDB)
304.90 Ma
Pliocene
0.13 Ma
Pleistocene
Pronothrotherium
genus
accepted (GBIF)
listed (PBDB)
49.00 Ma
Miocene
4.00 Ma
Pliocene
Thalassocnus
genus
accepted (GBIF)
listed (PBDB)
1111.6 Ma
Miocene
3.60 Ma
Pliocene
Xyophorus
genus
accepted (GBIF)
listed (PBDB)
516.0 Ma
Miocene
5.33 Ma
Miocene

Synonymy List

YearName and Author
1920Nothrotheriidae Ameghino
2004Nothrotheriidae Muizon et al. p. 388
2016Nothrotheriidae Amson et al. p. 231 figs. Fig. 10

References

Muizon C., McDonald H. G., et al (2004) The youngest species of the aquatic sloth Thalassocnus and a reassesment of the relationships of the nothrothere sloths (Mammalia: Xenarthra), Journal of Vertebrate Paleontology 24 2, 387-397
Amson E., Muizon C., et al (2016) A reappraisal of the phylogeny of the Megatheria (Mammalia: Tardigrada), with an emphasis on the relationships of the Thalassocninae, the marine sloths, ZoologicalJournaloftheLinneanSociety 179, 217-236 doi:10.1111/zoj.12450
de Muizon et al., 2004 - 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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