Print ISSN: 0031-0247
Online ISSN: 2274-0333
Frequency: biannual
Werneburg et al. New Permian Caseid from France
Embrithopod from Croatia
Field trip guides/EAVP Annual Conference/2023
Early Oligocene Fishes from Alabama, USA
Two enigmatic rodents from Lavergne (MP 16), Quercy Phosphorites
Eocene (57) , Quercy phosphorites (37) , Systematics (32) , Rodents (29) , Mammalia (26)
The endocranial cast and encephalization quotient of Ptilodus (Multituberculata, Mammalia)David W. Krause and Zofia Kielan-JaworowskaKeywords: encephaIization quotient; endocranial cast; Montana; Multituberculata; olfactory bulbs; Paleocene; PtilodusAbstract Simpson (1937a) reconstructed the brain of the Paleocene multituberculate Ptilodus as having the olfactory bulbs widest anteriorly, an unusual condition among mammals. Slight preparation and reexamination of the endocast specimens of Ptilodus reveals that the olfactory bulbs in fact taper anteriorly, as in the recently-described endocranial casts of three multituberculate species from the Late Cretaceous of Asia, and as in those of other mammals. The brain of Ptilodus was therefore essentially of the same general pattem as in other multituberculates. Ptilodus differs, however, in having the vermis more deeply inserted between the cerebral hemispheres. Other details concerning the endocast morphology of Ptilodus are clarified. Article infos Published in Vol. 22, Fasc. 2-3 (1993) |
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Die Ohr-Region der Paulchoffatiidae (Multituberculata, Ober-Jura).Gerhard HahnKeywords: Multituberculata; Ober-Jura; Paulchoffatiidae; Petrosum; PortugalAbstract The petrosal of the Paulchoffatiidae HAHN, 1969 is described and compared with that of younger multituberculates and of other Mesozoic mammals. The "Morrison petrosal", described by Prothero (1983), is also discussed; it probably belongs to the multituberculates. The reconstruction of the ventral side of the Paulchoffatiinae-skull, given by Hahn in 1987, is completed by addition of the otic and the occipital region. Article infos Published in Vol. 18, Fasc. 3 (1988) |
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