Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Sciurus angusticeps was named by Matthew (1933). Its type specimen is AMNH 21336, a partial skull ( skull without the left zygomatic arch, third premolars, left M2, and third molars), and it is a 3D body fossil.
It was recombined as Protospermophilus angusticeps by Bryant (1945) and Black (1963).
It was recombined as Protospermophilus angusticeps by Bryant (1945) and Black (1963).
Synonymy list
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.
†Protospermophilus angusticeps Matthew 1933
show all | hide all
Diagnosis
Reference | Diagnosis | |
---|---|---|
M. D. Bryant 1945 | Skull near the size of that of P. malheurensis; larger than that of P. tephrus. Cranium moderately inflated, about as in Otospermophilus; rostrum relatively broader than in P. malheurensis and relatively narrower than in P. quatalensis; palate broad; notch in ventral border of zygomatic plate opposite P4. P3 larger than in P. quatalensis; other cheek 'teeth large. The diagnosis given by Matthew (1933 :4) is primarily generic rather than specific. |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|||||
|
|
||||
Source: f = family, subc = subclass, c = class, subp = subphylum | |||||
References: Nowak 1991, Lillegraven 1979, Hendy et al. 2009, Carroll 1988, Ji et al. 2002 |
Age range: Hemingfordian or 20.43000 to 15.97000 Ma
Collections (4 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Hemingfordian | USA (Nevada) | Protospermophilus angusticeps (18960 18961 18962 18964) |