Sentences with phrase «with tetrapod»
A few that pop to mind are the Coconino Sandstone, the meandering / lateral channels in the Grand Canyon, the progressive order of the fossil record (complete with a pre-hominid through hominid progression), forms which bear features bridging the specially - created kinds (i.e. fish with tetrapod features, reptiles with mammalian features, reptiles with avian features, etc), the presence of anomalous morphological / genetic features (e.g. the recurrent laryngeal nerve, male nip - ples, the presence of a defunct gene for egg - yolk production in our own placental mammal genomes), etc, etc..
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Fish with tetrapod features, reptiles with mammalian features, reptiles with avian feature all exist in the correct temporal / morphological order.
While some invertebrates had transitioned from marine to terrestrial environments millions of years earlier, even more came ashore during this period, along with the tetrapods.
Not exact matches
Acanthostega is also the first tetrapod with a sacrum, strengthening the pelvis - hind limb connection.
Pederpes (350 million years ago): This Scottish find is the earliest with five functional digits, a pattern that would dominate later tetrapods.
Researchers have yet to find the species that can link early fishapods with fully terrestrial tetrapods.
Although these species had evolved stronger limbs with defined digits, they still weren't truly tetrapods.
The tetrapod story starts with lobe - finned fishes nearly 400 million years ago.
The early tetrapods (from the Ancient Greek word meaning «four - footed») were the first vertebrates to tread terra firma, developing lungs to capture atmospheric oxygen and turning fins into legs, but with a life cycle that was still closely tied to aquatic environments.
At just 1 centimetre long, it ties with a Brazilian frog as the world's tiniest tetrapod — a group that includes all vertebrates apart from fish.
«The pattern of co-occurring species remained stable through the evolution of land organisms from the earliest tetrapods through dinosaurs, flowering plants and mammals,» said Anna K. Behrensmeyer, a paleobiologist with the Smithsonian's Museum of Natural History and a co-author of the study.
«Among vertebrate tetrapods — things with four limbs — the axolotl is one of the best regenerators out there.»
«Among vertebrate tetrapods — things with four limbs — the axolotl is one of the best regenerators out there,» says Jeffrey Nelson, a former postdoctoral fellow in regenerative biology at the Morgridge Institute.
In tetrapods (creatures with four limbs), it's the large bone in the upper hind limbs.
«And then we get complete sets of lineages we are quite familiar with: coelacanths, also lungfish, and of course our direct ancestors the tetrapods (every land vertebrate ever, plus birds, bats, dolphins and whales).»
Lobe - finned ancestors of the lungfishes as well as tetrapods could have evolved hindlimb propulsion and the ability to walk on the substrate at the bottom of a lake or marsh millions of years before limbs with digits and land - dwelling animals appeared.
Coupled with the ability of the lungfish to fully rotate the limb and place each subsequent footfall in front of the joint, the motion suggests that similar creatures would have been capable of producing some of the fossil tracks credited to tetrapods.
«It's tempting to attribute alternating impressions to something like the footfalls of an early tetrapod with digits, and yet here we've got good evidence that living lungfish can leave similar sequences of similar gait,» said Coates, PhD, professor of Organismal Biology and Anatomy.
Tetrapod footprints and skeletal material from more than 70 localities in eastern North America indicate that large theropod dinosaurs appeared less than 10,000 years after the Triassic - Jurassic boundary and less than 30,000 years after the last Triassic taxa, in synch with a terrestrial mass extinction.
This family of loaches, sometimes called sting - loaches, is found in Eurasia and Morocco and has about 28 genera with about 236 species (Berra The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe - finned fishes.
The evolution of tetrapods began about 400 million years ago in the Devonian Period with the earliest tetrapods evolved from lobe - finned fishes.
About Blog Tetrapod Zoology is the podcast of the famous blog by Darren Naish, with John Conway as the straight - man.