Note 2 — Chapter VI · THE VERMES AND MOLLUSCA OF THE DEEP SEA
Reading edition
A rudimentary notochord projecting forward from the buccal cavity into the epistome has quite recently been discovered in Rhabdopleura.
Reading edition
A rudimentary notochord projecting forward from the buccal cavity into the epistome has quite recently been discovered in Rhabdopleura.