Protoconodonta
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An extinct clade resembling the Conodonta, but generally classified in phylum Chaetognatha (arrowworms) rather than under Chordata with the true conodontophores. Known only from fossil teeth.
An extinct clade resembling the Conodonta, but generally classified in phylum Chaetognatha (arrowworms) rather than under Chordata with the true conodontophores. Known only from fossil teeth.