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Megalonyx
Taxonomy
Megalonyx was named by Harlan (1825). It is not extant. Its type is Megatherium jeffersonii. It is the type genus of Megalonychinae.
It was assigned to Bradypidae by Gray (1825); to Rodimorpha by Cope (1889); to Megatheriidae by Hay (1902); to Megalonychinae by Hay (1930) and Varela et al. (2019); and to Megalonychidae by Harlan (1825), Kurten and Anderson (1980), Thurmond and Jones (1981), Carroll (1988), Gaudin (1995), Cisneros (2005), Pujos et al. (2007), McDonald and Naples (2007) and Albright et al. (2019).
It was assigned to Bradypidae by Gray (1825); to Rodimorpha by Cope (1889); to Megatheriidae by Hay (1902); to Megalonychinae by Hay (1930) and Varela et al. (2019); and to Megalonychidae by Harlan (1825), Kurten and Anderson (1980), Thurmond and Jones (1981), Carroll (1988), Gaudin (1995), Cisneros (2005), Pujos et al. (2007), McDonald and Naples (2007) and Albright et al. (2019).
Species
M. curvidens, M. cuvieri, M. dissimilis, M. gigas, M. gracilis, M. jeffersonii (syn. M. milleri, M. californicus, M. brachycephalus, M. laqueatus, M. hogani), M. leidyi, M. leptostomus (syn. M. rohrmani), M. loxodon, M. mathisi, M. obtusidens, M. scalper, M. sierrensis, M. tortulus, M. validus, M. wheatleyi (syn. M. sphenodon)
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1825 | Megalonyx Gray p. 343 |
| 1825 | Megalonyx Harlan |
| 1889 | Megalonyx Cope p. 660 |
| 1893 | Megalonyx gracilis Lund p. 219 |
| 1902 | Megalonyx Hay p. 577 |
| 1930 | Megalonyx Hay p. 407 |
| 1980 | Megalonyx Kurten and Anderson p. 136 |
| 1981 | Megalonyx Thurmond and Jones p. 178 |
| 1988 | Megalonyx Carroll |
| 1995 | Megalonyx Gaudin |
| 2005 | Megalonyx Cisneros p. 245 |
| 2007 | Megalonyx McDonald and Naples p. 154 |
| 2007 | Megalonyx Pujos et al. |
| 2019 | Megalonyx Albright et al. p. 153 |
| 2019 | Megalonyx Varela et al. |
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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.
G. †Megalonyx Harlan 1825
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†Megalonyx curvidens Matthew 1924
†Megalonyx cuvieri Lund 1839
†Megalonyx dissimilis Leidy 1855
†Megalonyx gigas Marsh 1874
†Megalonyx jeffersonii Desmarest 1822 [Jefferson's ground sloth]
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Invalid names: Megalonyx brachycephalus Sellards 1941 [synonym], Megalonyx californicus Stock 1913 [synonym], Megalonyx hogani Stovall 1940 [synonym], Megalonyx laqueatus Harlan 1831 [synonym], Megalonyx milleri Lyon 1938 [synonym]
†Megalonyx leidyi Lindahl 1892
†Megalonyx loxodon Cope 1871
†Megalonyx mathisi Hirschfeld and Webb 1968
†Megalonyx obtusidens Webb and Perrigo 1985
†Megalonyx scalper Cope 1899
†Megalonyx sierrensis Sinclair 1905 [sloth]
†Megalonyx tortulus Cope 1871
†Megalonyx validus Leidy 1868
Invalid names: Megalonyx gracilis Lund 1893 [nomen nudum]
Diagnosis
No diagnoses are available