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the did not evlove from that. they evloved from something else. once i find out i will put it out here.
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∙ 14y ago
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Why are protochordates not classified as true chordates?
any member of either of two invertebrate subphyla of the phylum Chordata: the Tunicata (sea squirts, salps, etc.) and the Cephalochordata (amphioxus). Like the remaining subphylum of the chordates, the Vertebrata, the protochordates have a hollow dorsal nerve cord, gill slits, and a stiff supporting rod, the notochord, the forerunner of the backbone. The protochordates differ chiefly from the vertebrates in not having a backbone. Recent protochordates are thought to have evolved from the same ancestral stock as that which gave rise to the vertebrates.
What were the first vertebrates to evolve?
jawless fishes
How do vertebrates evolve?
fish- amphibians- reptiles- birds -mammals
What animal is in chodates?
Vetebrates and protochordates.
What do protochordates breathe through?
by there skin
What did invertebrates evolve from?
They were the original form of life and they came before vertebrates.
Did the first vertebrates evolve during the mesozoic era?
No. The 1st vertebrates appeared in the fossil record about 525 million years ago during the Cambrian Period. This was in the Paleozoic Era.
Does a fish evolve into a shark?
Sharks are a type of fish. This is because fish are defined as being vertebrates with gills.
Arthropods invaded land about 100 million years before vertebrates did so This most clearly implies that?
Arthropods have had more time to co-evolve with land plants than other vertebrates.
What fish group gave rise to the terrestrial vertebrates?
The latest major group of vertebrates to evolve were the birds, which evolved from dinosaurs around 155 million years ago.
Is hemichordata same as protochordata?
No Hemichordata is a separate phylum , but related to Chordata , Protochordates are part of chordates
In what order did the five classes of vertebrates evolve?
1.Fish 2.Amphibians 3.Reptiles 4.Birds 5.Mammals
