EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Morphology of the skull in Meniscomys from the John Day Formation of central Oregon



Morphology of the skull in Meniscomys from the John Day Formation of central Oregon



PaleoBios 26(1): 1-9



Aploclontoid rodents are very diverse through the Oligocene and Miocene in North America. They are represented in the fossil record by a number of morphologically distinct lineages, many of which arc represented in the John DaN Formation of central Oregon. Although the diversity of dental morphologies in this lineage is Well understood, skull morphology is well-described for only the mylagaulid and aplodontine lineages of aplodontoids. Less well-preserved skulls have also been described from the basal paraphyletic group of prosciurines and for the allomyines lineage. This paper describes the morphology of the skull in Meniscomys, a taxon that lies at the transition between Paleogerie and Neogene groups of aploclontoids. These groups are quite distinct in dental and cranial morphology and inferred ecology. Examination of the skull of Meniscomys shows that it retains a number of plesiomorphic characters, but shows some evidence of the shortening, broadening, and flattening that characterizes Neogene aplodontoids.

(PDF emailed within 1 workday: $29.90)

Accession: 012994748

Download citation: RISBibTeXText



Related references

Diagenetic K feldspar in the John Day Formation in north-central Oregon. Geological Society of America Bulletin 71(12, Part 2): 1884-1885, 1960

Two floras in the upper John Day Formation near Madras, central Oregon. PaleoBios 21(2, Suppl, 2001

John Day Formation near Ashwood, north-central Oregon; Article 343. U S, 1961

Occurrence of the insectivore genus Micropternodus in the John Day formation of central Oregon. Bull S Calif Acad Sci 63(2): 57-80, 1964

The mineralogical record of climate change in the John Day Formation, central Oregon. Abstracts with Programs - Geological Society of America 34(5): 26, 2002

Biochronologic and lithostratigraphic reappraisal of the upper John Day Formation, north-central Oregon. Paleobios. October 13; 262: 21-25, 2006

Biochronolgoic and lithostratigraphic reappraisal of the upper John Day Formation, north-central Oregon. PaleoBios 26(2): 21-25, 2006

Caddisfly case impression from the John Day Formation (Oligocene), north-central Oregon. Occasional Papers in Paleobiology St Cloud State University ch; 6(2): 1-6, 1992

Milankovitch-scale fluctuations in mammal communities in the upper John Day Formation , Central Oregon. Journal of Vertebrate Paleontology 21(3 Supplement): 92A, 22 August, 2001

Base of the john day formation, horse heaven mining district, north-central oregon. Special Paper Geological Society of America: 567-568. 1969., 1969

The mineralogical record of Eocene/ Oligocene climate change in the John Day Formation, central Oregon. The Green Mountain Geologist 29(2): 18, 2002

Base of the John Day Formation in and near the Horse Heaven mining district, north-central Oregon. U S, 1968

Volcanic clastic rocks of the John Day Formation in the Monument Quadrangle, north-central Oregon. Geological Society of America Bulletin 71(12, Part 2): 1865, 1960

Coleopterous egg deposition on an alder leaf from the John Day Formation (Oligocene), north-central Oregon. Occasional Papers in Paleobiology St Cloud State University. February; 61: 1-5, 1992

Cut-and-fill episodes in the John Day Formation (Eocene-Miocene) in the Painted Hills area of central Oregon. Abstracts with Programs - Geological Society of America 24(5): 7, 1992