| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Allomyinae
Taxonomy
Allomyidae was named by Marsh (1877). It is not extant.
It was synonymized subjectively with Sciuridae by Hay (1902); it was reranked as the subfamily Allomyinae by Rensberger (1975), Rensberger (1983).
It was assigned to Rodentia by Marsh (1877); to Aplodontidae by Rensberger (1975), Rensberger (1983); and to Aplodontoidea by McKenna and Bell (1997).
It was synonymized subjectively with Sciuridae by Hay (1902); it was reranked as the subfamily Allomyinae by Rensberger (1975), Rensberger (1983).
It was assigned to Rodentia by Marsh (1877); to Aplodontidae by Rensberger (1975), Rensberger (1983); and to Aplodontoidea by McKenna and Bell (1997).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1877 | Allomyidae Marsh |
| 1975 | Allomyinae Rensberger |
| 1983 | Allomyinae Rensberger |
| 1997 | Allomyidae McKenna and Bell |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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.
Subfm. †Allomyinae Marsh 1877
show all | hide all
G. †Allomys Marsh 1877
hide
†Allomys cavatus Cope 1881
†Allomys cristabrevis Barnosky 1986
†Allomys reticulatus Rensberger 1983
†Allomys simplicidens Rensberger 1983
†Allomys stirtoni Klingener 1968
†Allomys storeri Tedrow and Korth 1997
†Allomys tessellatus Rensberger 1983
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Rensberger 1975 | "Cheekteeth with moderately large m2-3/M2-3, m1/M1, as large as m2/M2 or only slightly reduced. Tendency, beginning in late Oligocene or early Miocene, for acquisition of strong ectoloph, prominent mesostyle, moderately prominent parastyle and metastyle in upper molars. P3 present." | |
| J. M. Rensberger 1983 | "Definition (revised). Cheek teeth brachyodont but with tendencies for development of high crests. Mesostyle in upper cheek teeth with strong labial prominence, closing labial end of central transverse valley; ectoloph with deeply concave labial face on paracone; crests, not cusps, dominating ectoloph; accessory cusp present labial to metaconule, small in P4, strong in M1-2; hypocone present on posterior cingulum.
p4-m3 with crest joining metaconid and mesostylid; lower cheek teeth primitively dominated by shallow basin: major cusps small, widely set; hypolophid weak, not continuous across talonid basin; mesostylid primitively a transversely compressed cusp terminating metastylid crest, positioned linguad of line connecting metaconid and en-toconid; mesostylid lacking internally directed crest. p4-m3 primitively with weak, posteriorly directed crest from anteroconid; crest connecting labial margins of hypoconid and mesoconid closing posterolabial fossettid in most primitive known forms; mesoconid small, strongly labial in position; entoconid anterolingual of hypoconulid; p4 only slightly larger than m1, with internal metaconid crest extending posteriad, not toward ectolophid. Incisors with narrower faces than in Meniscomyinae; faces of lower incisors convex. Interior of tympanic cavity subdivided by sparsely arranged partitions (spaced 2 to 5 mm or more apart at anteroposterior center of ventral midline of bulla)." |