Crurotarsi

From left clockwise: Longosuchus, Gavialis, Saurosuchus, Litargosuchus, Chenanisuchus, Dakosaurus

• Worldwide

The Crurotarsi (also Crocodylotarsi Benton and Clark, 1988) are a group of archosaurs, including the crocodiles ( Crocodylia ) and some extinct taxa such as the Phytosauria belong.

Features

The common phylogenetic feature ( synapomorphy ) is typical for her training of the ankle, extending to between the two proximal ( " upper " ) tarsal bones Astragalus and calcaneus joint line. The Crurotarsi are the Ornithodira ( pterosaurs and dinosaurs ) against a sister group, in which the ankle joint between the proximal and distal ( " lower " ) runs tarsal bones.

• Ankle joints of archosaurs with a schematized course of the hinge line

The ankle Ornithodiren ( derived Mesotarsalgelenk ) for comparison

System

Dinosaurs ( Dinosauria ), including birds ( Aves)

Pterosaur ( Pterosauria ) †

Phytosauria †

Aetosauria †

Ornithosuchidae †

" Rauisuchia " †

Basal Crocodylomorpha † ( grade)

Crocodiles ( Crocodylia )