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First developed vertebrates on the Earth...

First developed vertebrates on the Earth were `:`

A

placoderms

B

ostracoderms

C

cyclostomates

D

chondrichthyes

Text Solution

Verified by Experts

The correct Answer is:
b
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Knowledge Check

  • First life on the Earth were:

    A
    autotrophs
    B
    cyanobacteria
    C
    photoautotrophs
    D
    chemoheterotrophs

  • First vertebrates appeared in :

    A
    permian
    B
    silurian
    C
    ordovician
    D
    cambrian

  • First vertebrates orginated during the period

    A
    Devonian
    B
    Silurian
    C
    Carboniferous
    D
    Ordovician.

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