Of the periods listed below, which ONE is the earliest period when Ostracoderms, the jawless and finless fishes, appeared?A. Devonian periodB. Cambrian periodC. Carboniferous periodD. Silurian period

Of the periods listed below, which ONE is the earliest period when Ost

1.	Of the periods listed below, which ONE is the earliest period when Ostracoderms, the jawless and finless fishes, appeared?A. Devonian periodB. Cambrian periodC. Carboniferous periodD. Silurian period
Answer» Correct Answer - D Period is time

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Of the periods listed below, which ONE is the earliest period when Ostracoderms, the jawless and finless fishes, appeared?A. Devonian periodB. Cambrian periodC. Carboniferous periodD. Silurian period

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