Definition of Hemichordata in English:
A small phylum of marine invertebrates that comprises the acorn worms.
- The superphylum Deuterostomia contains the diverse phyla Chordata and Echinodermata and the minor phyla Hemichordata and Urochordata.
- The superphyla Deuterostomia (e.g., Chordata, Echinodermata, Hemichordata) and Protostomia each appear to have evolved from an ancestor with a coelomic body cavity.
- Metamorphosis in the acorn worms (Hemichordata, Enteropneusta) includes retention of the entire larval body, which sheds feeding and propulsory cilia and undergoes definitive shape changes.
Definition of Hemichordata in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Spain
Most popular in Malaysia