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Parapliosaccomys
Taxonomy
Parapliosaccomys was named by Shotwell (1967). It is not extant.
It was assigned to Geomyinae by Korth (1987); and to Geomyidae by Shotwell (1967), McKenna and Bell (1997).
It was assigned to Geomyinae by Korth (1987); and to Geomyidae by Shotwell (1967), McKenna and Bell (1997).
Synonymy list
| Year | Name and author |
|---|---|
| 1967 | Parapliosaccomys Shotwell |
| 1987 | Parapliosaccomys Korth p. 1060 |
| 1997 | Parapliosaccomys McKenna and Bell |
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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. †Parapliosaccomys Shotwell 1967
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†Parapliosaccomys annae Korth 1987
†Parapliosaccomys hibbardi Storer 1973
†Parapliosaccomys oregonensis Shotwell 1967
†Parapliosaccomys transversus Barnosky 1986
†Parapliosaccomys witteorum Martin 2008
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Invalid names: Parapliosaccomys wittei Martin 2008 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. W. Korth 1987 | Geomyines with subhypsodont cheek teeth with incomplete enamel failure on medial and lateral sides; molars with bilophate occlusal pattern consisting of two transverse rows of three cusps on unworn teeth; P4 and p4 rooted throughout ontogeny, molars rootless until very late wear stages; protoloph of P4 buccolingually elongate; metalophid of P4 consists of two major cusps (metaconid and protostylid) with one or many accessory cuspules; central basin retained between the metalophid and hypo- lophid on P4 on little worn specimens; incisors broad and flattened anteriorly; depression present on lateral side of the mandible anterior and ventral to articular condyle. |
Measurements
No measurements are available
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| Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Carroll 1988, Ji et al. 2002, Hendy et al. 2009, Nowak 1991 | |||||
Age range: base of the Barstovian to the top of the Hemphillian or 16.30000 to 4.70000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Barstovian | USA (Wyoming) | Lignimus transversus (18868 18990) | |
| Barstovian | USA (Nebraska) | P. annae (18031 18121 18141 18164 18209) P. sp. (18027) | |
| Early/Lower Barstovian | USA (Montana) | Phelosaccomys annae (18803) | |
| Clarendonian | USA (Nebraska) | Phelosaccomys hibbardi (18324 18452 188779) | |
| Clarendonian | USA (Kansas) | Lignimus hibbardi (18450) | |
| Clarendonian | USA (South Dakota) | Lignimus hibbardi (18406) | |
| Late/Upper Clarendonian | USA (Nebraska) | Geomyidae indet. (18066) Phelosaccomys hibbardi (18327) | |
| Hemphillian | USA (Oregon) | P. sp., Pliosaccomys dubius (18970) P. wittei (237928 237929 237930 237940 237941 237942) | |
| Hemphillian | USA (Nevada) | P. oregonensis (18850) | |
| Late/Upper Hemphillian | USA (Nevada) | Nerterogeomys sp. (19374) |