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Prehistoric animals of the Carboniferous period, during the Paleozoic Era See also the preceding Category:Devonian animals and the succeeding Category:Permian animals Subcategories
Carboniferous is the period during which both terrestrial animal and land plant life was well established. [10] Stegocephalia (four-limbed vertebrates including true tetrapods ), whose forerunners ( tetrapodomorphs ) had evolved from lobe-finned fish during the preceding Devonian period, became pentadactylous during the Carboniferous. [ 11 ]
The synapsid lineage became distinct from the sauropsid lineage in the late Carboniferous period, between 320 and 315 million years ago. [2] The only living synapsids are mammals, [3] while the sauropsids gave rise to the dinosaurs, and today's reptiles and birds along with all the extinct amniotes more closely related to them than to mammals. [2]
Carboniferous animals of the Carboniferous Period in North America, during the Paleozoic Era Subcategories. This category has the following 4 subcategories, out of 4 ...
The distinctive temporal fenestra developed about 318 million years ago during the Late Carboniferous period, [1] when synapsids and sauropsids diverged, but was subsequently merged with the orbit in early mammals.
Synapsids (precursors to mammals) separate from sauropsids (reptiles) in late Carboniferous. [88] 305 Ma The Carboniferous rainforest collapse occurs, causing a minor extinction event, as well as paving the way for amniotes to become dominant over amphibians and seed plants over ferns and lycophytes. First diapsid reptiles (e.g. Petrolacosaurus ...
Basal amniotes resembled small lizards and evolved from semiaquatic reptiliomorphs during the Carboniferous period. [12] After the Carboniferous rainforest collapse, amniotes spread around Earth's land and became the dominant land vertebrates. [12] They almost immediately diverged into two groups, namely the sauropsids (including all reptiles ...
Comparing this to other mammals, it can be inferred that the first mammals to gain sexual differentiation through the existence or lack of SRY gene (found in the y-Chromosome) evolved only in the therians. Early mammals and possibly their eucynodontian ancestors had epipubic bones, which serve to hold the pouch in modern marsupials (in both sexes).