What is unusual about the hynerpeton?
Hynerpeton is known for being the first Devonian four-limbed vertebrate discovered in the United States, as well as possibly being one of the first to have lost internal (fish-like) gills. This genus is known from few remains discovered at the Red Hill fossil site in Hyner, Pennsylvania.
What evolves into hynerpeton?
Petrolacosaurus
Hynerpeton was seen in the first episode. One was chased by a Stethacanthus and a Hyneria but was able to escape. it evolved into Petrolacosaurus.
Who discovered Hynerpeton?
Deaschler, 56, who received a PhD from the University of Pennsylvania in 1998 and is known for his work on the preservation of natural history collections, is the discoverer of the transitional fossil tetrapod Hynerpeton bassetti and a Devonian fish-like specimen of Sauripterus taylorii with fingerlike appendages.
Why did hynerpeton need to stay near the water?
Hynerpeton was an animal suited to the water rather than land. In the water, it was an able, fast swimmer. On land, however, it was cumbersome, slow, and needed to reside close to the water as its lungs were not as good as inhaling oxygen. Therefore, they had to be laid in water.
What characteristics of Tiktaalik are fish like?
Tiktaalik retained both fish and tetrapod characteristics. Its fish characteristics include scales, fins, and gills, and its tetrapod characteristics include a neck, ribs capable of bearing weight, a flat head, dorsally positioned eyes, a fin skeleton, and ear notches (The University of Chicago, 2006).
Are Dolphins tetrapods?
Whales, dolphins, seals and sea turtles are members of an exceptional group of animals, called marine tetrapods, that have moved from the sea to the land and back to the sea again over the last 350 million years — each time making radical changes to their life style, body shape, physiology and sensory systems.
What period did the first amphibian hynerpeton walk on land?
Late Devonian period
Hynerpeton (“creeping animal (herpeton) from Hyner”) was a basal carnivorous tetrapod that lived in the lakes and estuaries of the Late Devonian period around 360 million years ago. Like many primitive tetrapods, it is sometimes referred to as an “amphibian”, though it is not a true member of the class Amphibia.
What was in the Devonian Period?
The first tetrapods — land-living vertebrates — appeared during the Devonian, as did the first terrestrial arthropods, including wingless insects and the earliest arachnids. In the oceans, brachiopods flourished. Crinoids and other echinoderms, tabulate and rugose corals, and ammonites were also common.
What is a true tetrapod?
Definitions. Tetrapods can be defined in cladistics as the nearest common ancestor of all living amphibians (the lissamphibians) and all living amniotes (reptiles, birds, and mammals), along with all of the descendants of that ancestor. This is a node-based definition (the node being the nearest common ancestor).
