WebReversal – is a loss of derived trait present in ancestor and the reestablishment of a plesiomorphic trait. Convergence – independent evolution of a similar trait in two or more … http://palaeos.com/vertebrates/theropoda/dinosaurs-birds.html
Synapomorphy - an overview ScienceDirect Topics
WebIn this example, synapomorphies include (1) the derived states of characters 1 and 3 that group together X. nigra, ... Molecular data support the diapsid relationship by yielding a turtle–archosaur (crocodylian + bird) sister-group relationship or a turtle–crocodylian one. These data support the idea that turtles are more closely related to ... WebThe hypothesis of the direct origin of birds from theropod dinosaurs has recently become widespread. Direct sisterly relationships between theropods and birds were assumed in the basis of random and formal synapomorphies, such as the number of caudal vertebrae, relative length of the humerus, and flattening of the dorsal margin of the pubis. In … gillin boathouse
Morphology of the Dinosauria - University of California …
WebJan 2, 2024 · There are many anatomical similarities between crocodiles and birds. Both groups have a long, S-shaped neck, four legs, and a tail. ... This article will look at four synapomorphies between theropods and … WebThe list of putative synapomorphies for the Triatominae is surprisingly short, given the decades-long interest in studying the morphology of the group. Lent and Wygodzinsky … WebFeb 8, 2024 · Apomorphies in birds; Apomorphies in mammals; Apomorphies in insects; Cladism and synapomorphies; What is cladism? Monophyletic, paraphyletic, and polyphyletic groups; References; A apomorphy, in cladistic terminology, it is a state derived from a character. This state could be classified as "novel" if it is compared with a close … fudge recipe using fluff