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Altasciurus relictus
Taxonomy
Paramys relictus was named by Cope (1873). It is the type species of Altasciurus.
It was recombined as Sciurus relictus by Cope (1875), Hay (1902) and Trouessart (1904); it was recombined as Prosciurus relictus by Matthew (1909), Matthew (1910), Wood (1937), Galbreath (1953), Wood (1962), Wood (1980), Korth (1989); it was recombined as Altasciurus relictus by Korth and Tabrum (2017), Korth et al. (2022).
It was recombined as Sciurus relictus by Cope (1875), Hay (1902) and Trouessart (1904); it was recombined as Prosciurus relictus by Matthew (1909), Matthew (1910), Wood (1937), Galbreath (1953), Wood (1962), Wood (1980), Korth (1989); it was recombined as Altasciurus relictus by Korth and Tabrum (2017), Korth et al. (2022).
Entered
by J. Alroy on 2003-01-23; modified by M. Carrano on 2015-07-26
Synonymy list
| Year | Name and author |
|---|---|
| 1873 | Paramys relictus Cope p. 3 |
| 1875 | Sciurus relictus Cope p. 475 |
| 1902 | Sciurus relictus Hay p. 719 |
| 1904 | Sciurus relictus Trouessart |
| 1909 | Prosciurus relictus Matthew |
| 1910 | Prosciurus relictus Matthew p. 63 |
| 1937 | Prosciurus relictus Wood |
| 1953 | Prosciurus relictus Galbreath |
| 1962 | Prosciurus relictus Wood |
| 1980 | Prosciurus relictus Wood |
| 1989 | Prosciurus relictus Korth |
| 2017 | Altasciurus relictus Korth and Tabrum p. 321 figs. Fig.1; Tables 1–2 |
| 2022 | Altasciurus relictus Korth 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.
†Altasciurus relictus Cope 1873
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. W. Korth and A. R. Tabrum 2017 | Smaller than A. albiclivus, larger than A. clausulus; protocone crest on upper molars almost always present (90% of specimens; never present on A. albiclivus or A. clausulus); parastyle on P4 minute or lacking (larger in A. albiclivus, lacking in A. clausulus); lingual mesoloph from mesostyle on upper cheek teeth weak or absent (strongly developed in A. albiclivus, absent in A. clausulus); interorbital foramen positoned primitively an- terior to optic foramen (within optic foramen in A. albiclivus). |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Nowak 1991, Lillegraven 1979, Ji et al. 2002, Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Late/Upper Chadronian to the top of the Whitneyan or 37.00000 to 29.50000 Ma
Collections (30 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Chadronian | USA (Wyoming) | Prosciurus relictus (17009) | |
| Late/Upper Chadronian - Orellan | USA (Nebraska) | Altasciurus relictus (230806) | |
| Orellan | USA (Wyoming) | Prosciurus relictus (17318) | |
| Orellan | USA (South Dakota) | Prosciurus relictus (17094 17102 17173 17174) | |
| Orellan | USA (Colorado) | Prosciurus relictus (17081 17082) | |
| Orellan | USA (Montana) | Prosciurus relictus (17074 17109 17154) | |
| Orellan | USA (Nebraska) | Orella uncertain (17207) Prosciurus relictus (17059 17108 17150 17210 17216 17220 17221 17235 17236 17239 17242 17270 17273 17276) | |
| Orellan | Canada (Saskatchewan) | Prosciurus relictus (17111) | |
| Whitneyan | USA (South Dakota) | Prosciurus relictus (17382) | |
| Whitneyan | Canada (Saskatchewan) | Prosciurus relictus (17372) |