Print ISSN: 0031-0247
Online ISSN: 2274-0333
Frequency: biannual
Révision des Rhombodontidae (Neoselachii Batomorphii) des bassins à phosphate du Maroc
La palichnofaune de vertébrés tétrapodes du permien supérieur du Bassin de Lodève .
Evolution et extinction des reptiles marins au Mésozoïque
A pangolin from the French Quercy phosphorites
Les oiseaux aquatiques (Gaviiformes à Anseriformes) de Saint-Gerand-le-Puy. Révision systématique.
Eocene (53) , Quercy phosphorites (37) , systematics (31) , Rodents (29) , Mammalia (25)
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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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