Answer to Question #131869 in Evolution for uzaima gul

Question

evolution of mamalian molar dentition in triasic period?

Answer 1

In primitive fishes the evolution of teeth from structures are similar to dermal denticles. It is in line with the skin of the modern sharks which contributes to the success of vertebrates. The lineage of the teeth in fishes that led onto higher vertebrates and amphibians whereby they were mostly similar to the pointed cones which is essential to capture and hold prey. There are critical advancements made before the Permian whereby the teeth of some pelycosaurian reptiles began that differentiated the appearances of canine like fangs. Besides the differentiation followed in mammal-like therapsid reptiles. However only the three-cusped teeth in some which seem possible precursors in relation to any complex molar teeth of the mammals. The Mesozoic mammals have grounds from several types of tiny teeth. Example is the simple triangular teeth which seem ancestral to molars of tertiary mammals. The modern triangular teeth that have three cusps appeared first in the cretaceous period. The Palaeocene onward teeth provides a critical evidence in the concerns on evolution in the lineage of mammals. With time the number of teeth decreased whereby molars specialized functionality in respect to the feeding habits. The specialization advanced from the small primitive carnivores in two dimensions. The first one is efficient among carnivores which had enlarged cutting teeth. The second category is the herbivores having teeth adapted to grinding grasses. The latter was then passed to the omnivorous stages that had low-cusped teeth like similar to those of humans and pigs.