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Megalonyx

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Journal Article
Published: 01 September 2017
Journal of Paleontology (2017) 91 (5): 1069–1082.
... by Zacatzontli n. gen. While the morphology of the spout of Zacatzontli more closely resembles that of Megalonyx , based on the current record, Zacatzontli does does not enter North America until after the evolution of Megalonyx from Pliometanastes . The role of the northern neotropics in South America...
Series: GSA Field Guides, GSA Field Guides
Published: 01 January 2017
DOI: 10.1130/2017.0045(01)
EISBN: 9780813756455
... distinct species of Equus, two species of Bison, Panthera atrox, Smilodon fatalis, Canis dirus, Megalonyx jeffersonii, and Nothrotheriops shastensis are also present, and newly recognized faunal components include micromammals, amphibians, snakes, and birds. Invertebrates, plant macrofossils...
Journal Article
Published: 01 May 2016
Journal of Paleontology (2016) 90 (3): 578–587.
... Cartelle, De Iuliis, and Pujos, 2008 , the only other megalonychid sloth known from intertropical Brazil, and reinforce the distinction between these two species detailed in their initial descriptions. Comparisons with other sloths (e.g., Acratocnus , Megalonyx , Neocnus ) also reveal differences with Au...
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Journal Article
Published: 02 May 2011
Canadian Journal of Earth Sciences (2011) 48 (5): 793–800.
... ) are common, but other megafauna, such as Jefferson’s Ground Sloth ( Megalonyx jeffersoni ) and Yesterday’s Camel ( Camelops hesternus ), are comparatively rare. Current data for the postglacial fauna indicate a shift in which Bison becomes the most abundant large herbivore on the landscape, a pattern...
FIGURES
Series: GSA Memoirs
Published: 01 April 2009
DOI: 10.1130/2009.1203(16)
... on the State of Virginia and also in his 1797 Megalonyx memoir. Jefferson resisted the concept of extinction for a very long time, and he was never able to let go of his “completeness-of-nature” worldview. I suggest that several factors contributed to Jefferson’s inability to relinquish his worldview...
Journal Article
Journal: Geology
Published: 01 August 2005
Geology (2005) 33 (8): 649–652.
... armbrusteri ), cheetah ( Miracinonyx inexpectatus ), “camels” ( Hemiauchenia macrocephala and Paleolama mirifica ), tapir ( Tapirus veroensis ), deer ( Odocoileus virginianus ), sloth ( Megalonyx jeffersoni ), and horse ( Equus sp.). Of particular interest is the number of well-preserved fossil teeth...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 May 1949
GSA Bulletin (1949) 60 (5): 829–860.
... that inhabited the region at the time the Rexroad fauna lived were recovered from this deposit. The following forms new to the Rexroad fauna were recovered from the Keefe Canyon deposit: ?Megalonyx sp.; Dipoides rexroadensis sp. nov.; Martes foxi sp. nov.; Platygonus bicalcaratus Cope; Gigantocamelus spatulus...
Image
Figure 5. A sample of dental diversity in tardigrades. A,  Choloepus  sp. (...
Published: 01 August 2009
Figure 5. A sample of dental diversity in tardigrades. A, Choloepus sp. (CBF 00418), B, Octodontotherium sp. (YPM PU 21972). C, Nematherium birdi (AMNH 32652). D, Glossotherium sp. (MLP3-136). E, Hapalops angustipalatus (PU 15562). F, Megalonyx sp. (UF 170700). G, Thalassocnus natans
Image
Graph of the δ 13 C v. δ 18 O values for Cedral fauna. A –  Arctodus simus ...
Published: 10 November 2016
sp.; HM – Hemiauchenia macrocephala ; HV – Hemiauchenia vera ; MM – Mammut americanum ; MC – Mammuthus columbi ; MJ – Megalonyx cf. M . jeffersoni ; N – Nothrotheriops shastensis ; P – Panthera atrox ; PH – Paramylodon harlani ; PL – Platygonus sp.; T – Tapirus haysii .
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Figure 2. Plot of δ 18 O vs. δ 13 C of teeth from South Carolina, United St...
in > Geology
Published: 01 August 2005
forest, similar to mix of habitats observed today in South Carolina. Relatively low vs. intermediate δ 13 C values for Canis armbrusteri vs. Smilodon fatalis imply that they hunted primarily in forests vs. in marginal forest-grassland areas. Symbols for Megalonyx are lighter gray because diagenetic
Image
Means, maximum and minimum values of δ 13 C and δ 18 O                  Spe...
Published: 10 November 2016
Mammut americanum 3 −8.3 −9.2 −7.2 −4.4 −4.7 −3.9 Mammuthus columbi 4 −2.4 −3.8 −0.9 −4.4 −5.1 −3.8 Megalonyx cf. M. jeffersoni 1 −3.1 −3.1 3.1 −4.5 −4.5 −4.5 Nothrotheriops shastensis 1 −9.8 −9.8 −9.8 −3.8 −3.8 −3.8 Panthera atrox 1 −4.3 −4.3 −4.3
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Carbon and oxygen isotopic values for carnivores and herbivores from Cedral...
Published: 10 November 2016
DP2383 Mammuthus columbi −0.9 −4.5 DP3457 Megalonyx cf. M . jeffersoni −3.1 −4.5 DP3658 Nothrotheriops shastensis −9.8 −3.8 DP4424 Panthera atrox −4.3 −4.3 DP4387 Paramylodon harlani −4.8 −7.7 DP3217 Platygonus sp. −9.1 −4.8 DP3182 Tapirus haysii
Journal Article
Journal: PALAIOS
Published: 01 June 2005
PALAIOS (2005) 20 (3): 211–212.
... the disposal of core and samples from one of the deepest wells drilled on land in North America—a 31,441-foot well from Washita County, Okalahoma ( NRC, 2002, p. 29 )—or the loss of a complete, intact specimen of the giant ground sloth Megalonyx jeffersoni from the geology department museum at Indiana...
FIGURES
Journal Article
Published: 01 May 2006
Journal of Paleontology (2006) 80 (3): 604–605.
... throughout and his lists of Megalonyx , Nothrotheriops , and Glossotherium localities and their attendant references (Table 1.1–1.3) are particularly welcome. His claim that caves played a role in sloth ecology seems evident in the abundance of their remains (bone, skin, and dung) found in caves...
Journal Article
Journal: Geology
Published: 01 February 2007
Geology (2007) 35 (2): 123–126.
... Rancholabrean Bison , armadillo-like Holmesina septentrionalis , ground sloth Megalonyx jeffersonii , peccary Platygonus compressus , mammoth Mammuthus columbi , dire wolf Canis dirus , and American lion Panthera atrox ). This discovery extended the temporal range of phorusrhacids from the Pliocene (3.0...
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Series: GSA Field Guide
Published: 01 January 2013
DOI: 10.1130/2013.0032(04)
EISBN: 9780813756325
... ground sloths) Nothrotheriops shastensis (Shasta ground sloth) (UCMP 140260 cranium, MCPC A91 cranium) Family Megalonychidae (two-toed sloths) Megalonyx wheatleyi (Wheatley's ground sloth) (UCMP 140262 left upper caniniform, UCMP 194840 left humerus) Order Carnivora (carnivores...
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Journal Article
Published: 10 November 2016
Geological Magazine (2018) 155 (3): 674–684.
... sp.; HM – Hemiauchenia macrocephala ; HV – Hemiauchenia vera ; MM – Mammut americanum ; MC – Mammuthus columbi ; MJ – Megalonyx cf. M . jeffersoni ; N – Nothrotheriops shastensis ; P – Panthera atrox ; PH – Paramylodon harlani ; PL – Platygonus sp.; T – Tapirus haysii . ...
FIGURES
Series: GSA Special Papers
Published: 27 November 2018
DOI: 10.1130/2018.2535(21)
EISBN: 9780813795355
... to be lion-like in appearance and habit. By the time he published his paper on the animal, Jefferson had learned of an extinct giant sloth from South America with similar claws, so he did not specify that the animal was a cat ( Boyd, 1958 ). He dubbed the beast Megalonyx , or “giant claw” ( Jefferson, 1799...
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Journal Article
Journal: Paleobiology
Published: 01 August 2009
Paleobiology (2009) 35 (3): 343–366.
...Figure 5. A sample of dental diversity in tardigrades. A, Choloepus sp. (CBF 00418), B, Octodontotherium sp. (YPM PU 21972). C, Nematherium birdi (AMNH 32652). D, Glossotherium sp. (MLP3-136). E, Hapalops angustipalatus (PU 15562). F, Megalonyx sp. (UF 170700). G, Thalassocnus natans...
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Series: Geological Society, London, Special Publications, Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP317.24
EISBN: 9781862395657
... of a giant sloth. He was flattered to have it named Megalonyx jeffersoni – the first such mammal found in the new world. Mr Jefferson, even though an amateur, was willing to challenge Comte de Buffon’s assertion that human and animal life in America was both degenerative and inferior to that of Europe...
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