Print ISSN: 0031-0247
Online ISSN: 2274-0333
Frequency: biannual
stratigraphy and biochronology of Oligo-Miocene of Kazakhstan
Notidanodon tooth (Neoselachii: Hexanchiformes) in the Late Jurassic of New Zealand
Additions to the elasmobranch fauna from the upper Cretaceous of New Jersey (middle Maastrichtian, Navesink Formation)
Eocene otoliths (Clinchfield Formation), Georgia
Fossil snakes, Palaeocene, Itaborai, Brazil, Part I
Eocene (57) , Quercy Phosphorites (38) , Systematics (32) , Rodents (29) , Mammalia (27)
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Dilambodont Molars :a functional interpretation of their evolutionPercy M. ButlerKeywords: Convergent evolution; Dilambdodont; Molar function; Molar teethAbstract In dilambdodont molars the primitive crest between paracone and metacone (centrocrista) is represented by a pair of crests that join the mesostyle (postparacrista, premetacrista). The cutting action of these crests against the crests of the hypoconid is described. Dilambdodonty is a derived adaptation for greater cutting efficiency. It has evolved several times and in more than one way. Article infos Published in Vol. 25, Fasc. 2-4 (1996) |
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