Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Megalonyx

Mammalia - Megalonychidae

Synonyms
Synonymy list
YearName and author
1825Megalonyx Gray p. 343
1825Megalonyx Harlan
1874Morotherium Marsh p. 531
1889Megalonyx Cope p. 660
1893Megalonyx gracilis Lund p. 219
1902Megalonyx Hay p. 577
1902Morotherium Hay p. 579
1980Megalonyx Kurten and Anderson p. 136
1981Megalonyx Thurmond and Jones p. 178
1988Megalonyx Carroll
1995Megalonyx Gaudin
2005Megalonyx Cisneros p. 245
2007Megalonyx McDonald and Naples p. 154
2019Megalonyx Albright et al. p. 153

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
RankNameAuthor
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Americatheria
Xenarthra()
infraorderPilosaFlower 1883
familyMegalonychidaeGervais 1855
genusMegalonyxHarlan 1825

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingf
Diet: herbivoref
Created: 2005-06-08 10:11:09
Modified: 2005-08-22 18:30:05
Source: f = family, subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009, Ji et al. 2002, Nowak 1991

Age range: base of the Pliocene to the top of the Rancholabrean or 5.33300 to 0.01200 Ma

Collections (147 total)


Time interval Ma Country or state Original ID and collection number
Hemphillian10.3 - 4.9USA (Oklahoma) Megalonychidae indet. (18304)
Hemphillian10.3 - 4.9Mexico (Hidalgo) M. sp. (18746)
Hemphillian10.3 - 4.9USA (Nebraska) M. curvidens (18033 18201 18323 18441 18499) M. sp. (18043 18225)
Hemphillian10.3 - 4.9USA (Oregon) Megalonychidae indet. (19015) M. sp. (19116)
Hemphillian10.3 - 4.9USA (California) Megalonychidae indet. (19479) M. mathisi (19187)
Late/Upper Hemphillian10.3 - 4.9USA (Nebraska) M. curvidens (18126 18247 18359)
Late/Upper Hemphillian10.3 - 4.9USA (Texas) M. sp. (18036)
Late/Upper Hemphillian10.3 - 4.9Mexico (Guanajuato) M. sp. (18737)
Pliocene5.333 - 2.588Mexico (Jalisco) M. sp. (189788)
Blancan4.9 - 1.8Mexico (Sonora) M. wheatleyi (20322)
Blancan4.9 - 1.8USA (Idaho) M. leptonyx (19808) M. leptostomus (19911 19913)
Blancan4.9 - 1.8USA (Washington) M. leptostomus (20062) M. rohrmanni (20063)
Blancan4.9 - 1.8USA (Arizona) M. sp. (19653 19656 19657 19658)
Blancan4.9 - 1.8USA (Nevada) M. leptostomus (20009)
Blancan4.9 - 1.8USA (New Mexico) M. leptostomus (19655 19968)
Blancan4.9 - 1.8USA (Texas) M. leptostomus (20022 20023 20033) M. sp. (20034 20038 20052)
Blancan4.9 - 1.8USA (Kansas) M. leptostomus (19942) M. sp. (19932 19936 19939)
Blancan4.9 - 1.8USA (Florida) M. leptostomus (19753 19754 19764) M. sp. (19758)
Blancan4.9 - 1.8Mexico (Baja California Sur) M. sp. (20075)
Blancan4.9 - 1.8USA (California) M. sp. (19667 20112 20115 20118 20121) Xenarthra indet. (19714)
Blancan4.9 - 1.8USA (Nebraska) M. leptostomus (19959) M. sp. (19954 19955)
Blancan - Irvingtonian4.9 - 0.3USA (New Mexico) M. wheatleyi (20397)
Blancan - Irvingtonian4.9 - 0.3USA (South Dakota) M. leptostomus (20020)
Blancan - Irvingtonian4.9 - 0.3USA (Florida) M. leptostomus (19750 98313)
Late/Upper Pliocene3.6 - 2.588USA (Texas) M. sp. (191451)
Piacenzian3.6 - 2.588USA (California) M. sp. (19703)
Early/Lower Pleistocene2.588 - 0.781USA (South Carolina) M. leptostomus (206955)
Early/Lower Pleistocene2.588 - 0.781USA (Arizona) M. jeffersonii (85145)
Early/Lower Pleistocene - Middle Pleistocene2.588 - 0.126El Salvador M. sp. (70118)
Pleistocene2.588 - 0.0117USA (New Jersey) M. sp. (65469)
Pleistocene2.588 - 0.0117USA (Mississippi) M. jeffersoni (161954) M. sp. (161194)
Pleistocene2.588 - 0.0117USA (South Carolina) M. jeffersoni (152904) M. jeffersonii (65405)
Pleistocene2.588 - 0.0117USA (Illinois) M. jeffersonii (87059)
Pleistocene2.588 - 0.0117USA (West Virginia) M. jeffersonii (108095)
Calabrian1.806 - 0.781USA (Florida) M. leptostomus (20384)
Irvingtonian1.8 - 0.3USA (South Carolina) M. sp., M. jeffersonii (79919)
Irvingtonian1.8 - 0.3Canada (Saskatchewan) M. sp. (20563)
Irvingtonian1.8 - 0.3USA (Alabama) M. jeffersonii (20281)
Irvingtonian1.8 - 0.3El Salvador M. obtusidens (20152)
Irvingtonian1.8 - 0.3USA (Pennsylvania) M. wheatleyi (20479)
Irvingtonian1.8 - 0.3USA (California) M. sp. (20125 20130 20155 20161 20272 20319 20327 20387) M. sp., M. wheatleyi (20128) M. wheatleyi (20187)
Irvingtonian1.8 - 0.3USA (Florida) M. leptostomus (20308) M. sp. (26550) M. wheatleyi (20299 20350 20415 20475)
Irvingtonian1.8 - 0.3USA (Oklahoma) M. jeffersonii (20382)
Irvingtonian1.8 - 0.3USA (Iowa) M. jeffersonii (20556)
Irvingtonian1.8 - 0.3USA (Maryland) M. sp. (20302)
Irvingtonian1.8 - 0.3USA (South Dakota) M. wheatleyi (20158)
Irvingtonian1.8 - 0.3USA (Montana) M. jeffersonii (20310)
Irvingtonian1.8 - 0.3USA (Kansas) M. leidyi (20353) M. sp. (20291 20301)
Irvingtonian - Rancholabrean1.8 - 0.012USA (California) M. sp. (20323)
Middle Pleistocene0.781 - 0.126USA (South Carolina) M. jeffersonii (79767 79768)
Middle Pleistocene0.781 - 0.126USA (Virginia) M. jeffersonii (104662)
Middle Pleistocene0.781 - 0.126USA (Nebraska) M. sp. (34382)
Rancholabrean0.3 - 0.012USA (Florida) M. sp. (20491)
Rancholabrean (glacial)0.3 - 0.012USA (California) M. jeffersonii (20624)
Rancholabrean0.3 - 0.012USA (South Carolina) M. jeffersonii (79757 79760)
Late/Upper Pleistocene (high glacial)0.126 - 0.0117USA (Texas) M. brachycephalus (93103)
Late/Upper Pleistocene (late glacial)0.126 - 0.0117USA (North Dakota) M. jeffersonii (93268)
Late/Upper Pleistocene0.126 - 0.0117USA (Florida) M. jeffersonii (74292) M. sp. (74294) M. wheatleyi (20638)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117Canada (Alberta) M. sp. (20615)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117USA (Idaho) M. jeffersonii (20569 20612)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117USA (Florida) M. sp. (20573)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117Canada (Yukon) M. jeffersonii (20626)
Late/Upper Pleistocene (glacial)0.126 - 0.0117USA (California) M. jeffersonii (155393)
Late/Upper Pleistocene0.126 - 0.0117Guatemala (Peten) M. sp. (71312)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117USA (California) M. jeffersonii (20574) M. sp. (20585 20609)
Late/Upper Pleistocene0.126 - 0.0117USA (West Virginia) M. sp., M. jerrersonii (93332)
Late/Upper Pleistocene (late glacial)0.126 - 0.0117USA (Utah) M. jeffersonii (93266)
Late/Upper Pleistocene0.126 - 0.0117USA (Illinois) M. jeffersonii (93486)
Late/Upper Pleistocene0.126 - 0.0117USA (Virginia) M. jeffersonii (103358 104678)
Late/Upper Pleistocene (late glacial)0.126 - 0.0117USA (Illinois) M. jeffersonii (93209)
Late/Upper Pleistocene0.126 - 0.0117Honduras M. sp. (190753)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117USA (Alabama) M. jeffersonii (20584)
Late/Upper Pleistocene0.126 - 0.0117USA (Georgia) Megalonyx indet. (13066) M. sp. (84189)
Late/Upper Pleistocene0.126 - 0.0117USA (California) M. sp. (20273 73752 74235 93250 155409) M. sp., Megalonychidae indet. (20639)
Late/Upper Pleistocene (late glacial)0.126 - 0.0117USA (Ohio) M. jeffersonii (93208)
Late/Upper Pleistocene (interglacial)0.126 - 0.0117Canada (Northwest Territories) M. jeffersonii (20610)
Late/Upper Pleistocene0.126 - 0.0117USA (Missouri) M. jeffersoni (93379)
Late/Upper Pleistocene (late glacial)0.126 - 0.0117USA (Kansas) M. jeffersonii (83073)
Late/Upper Pleistocene - Holocene0.126 - 0.0USA (Missouri) M. jeffersonii (63563)