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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Cynarctus acridens was named by Barbour and Cook (1914) [this spelling is DEFINITELY correct]. Its type specimen is HC 144, a mandible, and it is a 3D body fossil. Its type locality is American Museum-Cook Quarry, which is in a Harrisonian terrestrial horizon in the Marsland Formation of Nebraska.
It was recombined as Notharctus acridens by Matthew (1932); it was recombined as Cynarctoides acridens by McGrew (1938), McGrew (1938), Galbreath (1956), Munthe (1988), Wang et al. (1999) and Wang et al. (2008).
It was recombined as Notharctus acridens by Matthew (1932); it was recombined as Cynarctoides acridens by McGrew (1938), McGrew (1938), Galbreath (1956), Munthe (1988), Wang et al. (1999) and Wang et al. (2008).
Synonyms
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Synonymy list
Year | Name and author |
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1914 | Cynarctus acridens Barbour and Cook |
1932 | Notharctus acridens Matthew |
1932 | Cynarctus mustelinus Matthew p. 2 figs. 2 - 3 |
1938 | Cynarctoides acridens McGrew |
1956 | Cynarctoides acridens Galbreath |
1956 | Cynarctoides mustelinus Galbreath |
1988 | Cynarctoides acridens Munthe |
1999 | Cynarctoides acridens Wang et al. |
2008 | Cynarctoides acridens Wang 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.
†Cynarctoides acridens Barbour and Cook 1914
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Invalid names: Cynarctus mustelinus Matthew 1932 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. D. Matthew 1932 (Cynarctus mustelinus) | Size much less than either C. saxatilis Matthew or C. crucidens Cook and more primitive than either species; the second molar two-thirds the length of m1; in C.
saxatilis of the M. paniensis zone it is nearly three-fourths and in C. crucidens of the Hipparion zone it is approximately seven-eighths as long, the breadth increasing in about the same proportion. The last molar in C. mustelinus is very small, only a third the length of m2; in C. saxatilis it is three-fifths as long, in C. crucidens, over two- thirds. |
Measurements
No measurements are available
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Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
References: Ji et al. 2002, Lillegraven 1979, Hendy et al. 2009, Carroll 1988, Nowak 1991 |
Age range: Hemingfordian or 20.43000 to 15.97000 Ma
Collections (48 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Arikareean | USA (South Dakota) | Nothocyon latidens (17462) | |
Harrisonian | USA (New Mexico) | Nothocyon minor (17844) | |
Harrisonian | USA (Wyoming) | Cynarctoides acridens (17780) | |
Harrisonian | USA (Nebraska) | Cynarctoides acridens (17809 17846 28043) Cynarctus acridens (type locality: 17744) | |
Early/Lower Hemingfordian | USA (New Mexico) | Cynarctoides sp. (19188 19312) | |
Early/Lower Hemingfordian | USA (Nebraska) | Cynarctoides acridens (17865 17874 17881 17891 17898 17906 17923 17927 17929 17932 17934 17940 17963 17978 18021) | |
Hemingfordian | USA (Wyoming) | Cynarctoides acridens (19073 19074 19075 19076 19077) | |
Hemingfordian | USA (Oregon) | Cynarctoides acridens (212624) | |
Hemingfordian | USA (Nebraska) | Cynarctoides acridens (17895 17896 17917 17920 17961 17987 17993) Cynarctoides mustelinus (18001) | |
Hemingfordian | USA (Colorado) | Cynarctoides acridens (17965) | |
Barstovian | USA (California) | Cynarctoides acridens (19530 19616) | |
Barstovian | USA (New Mexico) | Cynarctoides acridens (19449) | |
Early/Lower Barstovian | USA (New Mexico) | Cynarctoides acridens (19547) | |
Early/Lower Barstovian | USA (Nebraska) | Cynarctoides acridens (17880 17955 17971 17976 17985) |