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What type of fish is thought to be the evolutionary ancestor land animals?
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∙ 8y ago
lobe-finned fish
Sherwood Ritchie
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What type of fish is to be evolutionary ancestor to land animals?
lobe-finned fish
What type of fish is thought to be the evolutionary to land animals?
lobe-finned fish
What type of fish is thought to be evolutionary ancestors to land animals?
lobe-finned fish
What type fish is thought to be the evolotionary ancestor to land animals?
The Coelacanth, a lobe-finned fish.
What evolutionary milestone involving animals occurred during the devonian period?
Sharks, lung fish, bony fish, trilobite, and,amphibians.
Which type of animals are close to chordates from evolutionary point of view?
Chordates are the common ancestors of fish and sharks. They include lampreys and other types of primitive fish species that live in the sea.
What was the common ancestor of all animals was probably?
The last common ancestor of all animals was likely an organism not unlike modern-day protists.A single celled animal, not a plant found in the deepest oceans.
How are nucleotide sequences used to put organisms in evolutionary order?
When comparing nucleotide sequences in organisms, we find that the organisms that have less differences in their nucleotide sequences are closer related in the evolutionary tree. By this we mean that the common ancestor from which these two organisms evolved is more modern than the ancestor they might share with an organism that shows more difference in the DNA sequencing. Example: the chimps and humans share a common ancestor that is relatively modern because the difference in their nucleotide sequences is just about 1% but the differences between the nucleotide sequence of humans and fish shows lots of differences which shows their common ancestor y much older than the one with chimps.
If fish evolved into amphibians and we still have fish today then did some fish just no evolve?
To evolve from common ancestors is the way of evolutionary processes. Not so much in a linear fashion as in a " bushy " fashion. All organisms are evolving at all times and every organism is transitional. A common ancestor of lobe finned fishes gave rise to the amphibians and the lobe finned fishes we see today. One did not proceed in a linear fashion from the other, but both arose from a common ancestor.
What is the evolutionary relationship between sharks and fish?
Bony fish and sharks were, until very recently, thought to have evolved during the Silurian period, after the extremely severe Ordovician-Silurian mass extinction. But we now have jawless fish fossils (ostracoderms) from the Early Cambrian! Paleontology science believe bony fish (the very first gnathostome infraphylum) was the first to evolve. But we may be wrong. Fossil register of life in Earth is VERY, VERY scarce. And even more when we talk about life forms more than 400,000,000 years old... There are very consistent paleontologic theories to point a common ancestor of bony fish and sharks from the Late Ordovician, and they point to sharks evolving first because of the evolutionary emergence of cartilaginous skeletons, which would be a developement - and a design improvement - of the jawless fish primitive notochord. But we have not yet found any fossil register of this vertebrate common ancestor. In the meantime, we still have lampreys from the Early Cambrian with rice and sauce, or «À Bordalesa» (an unique Portuguese delicacy!)...
What is the best way to determine if snakes evolved from fish?
The best way would be through genetic analysis - if snakes and fish shared close evolutionary ancestors, many of the genes would be similar between the two classes of animals.
What is an evolutionary innovation associated with cartilaginous fish such as sharks?
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