Solution:
Formerly, Hemichordata was classified as a sub-phylum under Chordata because stomochord was inappropriately considered homologous to notochord. Now, it is treated as a separate non-chordate phylum.
ZoologyWhich of the following was earlier considered as a sub-phylum under phylum Chordata but now treated as a nonchordate Phylum?
Which of the following was earlier considered as a sub-phylum under phylum Chordata but now treated as a nonchordate Phylum?
