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Which group of fishes are most closely related to ancestral amphibians?
Tetrapods
What evolves to become the ancestor of all four limbed animals?
All four-limbed animals belong to the clade of Tetrapoda. The clade of Tetrapoda is defined as the first basal four-limbed animals and all their descendants, extant and extinct. The clade immediately superior (ancestral) to that is the clade of Teleostomi, which contains all jawed vertebrates, including the tetrapods, bony fish, and the extinct lineage of acanthodian fish.
Which group of fishes are most closely related to the ancestral amphibians?
The group of fishes most closely related to ancestral amphibians are the lobe-finned fishes, which include the coelacanths and lungfishes. These fishes share certain characteristics with amphibians, such as limbs with digits and lungs or lung-like structures, indicating a close evolutionary relationship.
When did ancestral mammoths become extinct?
around 2009 June 19
How many limb are tetrapods typically considered to have?
The word "tetrapod" literally translates as "four legs." Most tetrapods have four limbs, not counting the tail. There are some exceptions, snakes being the most obvious.
Which evolutionary innovation was most significant in helping tetrapods move to dry terrestrial environments?
The evolution of limbs with digits was the most significant innovation that helped tetrapods move onto dry terrestrial environments. This adaptation allowed for weight support, better mobility, and the ability to navigate various terrains.
Are sharks tetrapods?
No, sharks are not tetrapods. Tetrapods are a group of vertebrates that includes amphibians, reptiles, birds, and mammals, characterized by having four limbs. Sharks, being cartilaginous fish, belong to the class Chondrichthyes and have fins instead of limbs. Thus, they are classified as fish and not tetrapods.
What is an innovation associated with amphibians?
They are tetrapods.
Are tetrapods the direct descendants of fish?
Yes, tetrapods are believed to be direct descendants of fish. Around 360 million years ago, some fish evolved to have limbs and eventually transitioned onto land, giving rise to tetrapods.
Are most lions extinct?
Lions are not extinct yet.
There are signs that by 2100 are most species will be extinct.?
is it that there are signs that by 2100, most species will be extinct.
Why do most species of animals become extinct?
Most become extinct because they can not adapt to changes in their environments. Those that can don't become extinct.
