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The group as a whole is Placodermi. One of the largest and most famous genera of the group is Dunkleosteus.
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What are the characteristics of jawed cartilaginous fish?
eating other fishs
What was the first class to have jaws?
The first class of animals to have jaws were the gnathostomes, which include all jawed vertebrates such as fish, amphibians, reptiles, birds, and mammals. Jaws evolved from skeletal rods that supported the gills in the early jawless vertebrates.
Among jawed fish you have your bony fish and your cartilaginous fish Which of these is one of the latter?
One example of a cartilaginous fish is the shark. Sharks have skeletons made of cartilage rather than bone, distinguishing them from bony fish, which have skeletons made of bone.
As the embryo develops only jawless fish retain the notochord What does this indicate about the evolution of vertebrates?
The fact that jawless fish retain the notochord during development suggests that jawed vertebrates have evolved to develop without the notochord. This indicates that the notochord is an ancestral characteristic that has been lost or modified in the evolutionary lineage leading to jawed vertebrates.
When did fish first appear in the fossil record?
The first known vertebrate fossils, found at the Chengjiang locality in China, date back to the early Cambrian. These early vertebrates, such as Haikouichthys, are small, tapered, streamlined animals showing eyes, a brain, pharyngeal arches, a notochord, and rudimentary vertebrae. Vertebrates appear to have radiated in the late Ordovician, about 450 million years ago. However, most Ordovician fossil fossil vertebrates are rare and fragmentary, although available material suggests that ancestors of the sharks and jawed fish were present along with various lineages of armored jawless fish. By the middle Silurian, about 400 million years ago, the picture is clearer: the armored jawless fish were quite diverse, and the first definite jawed fish had appeared -- the Silurian is sometimes called the "Age of Fishes." By the late Devonian, 360 million years ago, early cartilaginous fish and bony fish were diversifying.
What animal did the jaw evolve from?
placoderms (an ancient jawed fish)
What are the characteristics of jawed cartilaginous fish?
eating other fishs
What organisms appearing during the Silurian period?
there were aracnids, jawed fish,eurypterid and land plant
During which period did eurypterids swim the oceans and the first jawed fish and vascular plants evolve?
Silurian period
What was the first class to have jaws?
The first class of animals to have jaws were the gnathostomes, which include all jawed vertebrates such as fish, amphibians, reptiles, birds, and mammals. Jaws evolved from skeletal rods that supported the gills in the early jawless vertebrates.
Is a trout a jawless fish?
No, trout are not jawless fish. They belong to the class Osteichthyes, which includes jawed fish with bony skeletons. Jawless fish belong to the class Agnatha, which includes animals like lampreys and hagfish.
Among jawed fish you have your bony fish and your cartilaginous fish Which of these is one of the latter?
One example of a cartilaginous fish is the shark. Sharks have skeletons made of cartilage rather than bone, distinguishing them from bony fish, which have skeletons made of bone.
What major events happend in the silurian period?
During the Silurian period, significant events included the diversification of jawed fish, the colonization of land by plants and invertebrates, and the formation of coral reefs. This period also saw the development of the first forests and the evolution of early arthropods.
What era is the fish in?
If you are asking what era the fish ORIGINATED, then your answer is the Cambrian Period, which was during the Paleozoic Era (544-245 million years ago). They started off as invertebrates, however. The first vertebrate that was a fish was the jawless fish in the Ordovician period. The first vertebrate that was a fish was the jawed fish in the Silurian period.
As the embryo develops only jawless fish retain the notochord What does this indicate about the evolution of vertebrates?
The fact that jawless fish retain the notochord during development suggests that jawed vertebrates have evolved to develop without the notochord. This indicates that the notochord is an ancestral characteristic that has been lost or modified in the evolutionary lineage leading to jawed vertebrates.
What is the sequence of vertebrate evolution?
Jawless Fish were first, then jawed fish, then fleshy finned, ray-finned and other modern jawed fish evolved, amphibians and sharks were evolving at about the same time, reptiles evolved from amphibians, mammals and birds were both evolving at about the same time( both from reptiles), dinosaurs were also evolving at this time and about 100 million years later the asteroid hit the Earth and Mammals started to takeover where dinosaurs had been and 200000 years ago we evolved.
Did the early Greeks fish?
Yes,the Early Greeks did fish. They also traded and herd goats and fish. So basically they did.
