Hemichordates are the acorn worms and pterobranchs, the phylum Hemichordata, which the Tree of Life places among the deuterostomes beside the echinoderms and chordates. It has two classes, the Enteropneusta, the acorn worms, in families such as Ptychoderidae, Harrimaniidae, Spengelidae and Saxipendiidae, and the Pterobranchia, in families such as Cephalodiscidae, Rhabdopleuridae and Atubaridae. GBIF counts about 1,137 descendant taxa in the Pterobranchia and about 199 in the Enteropneusta, so the pterobranch count is the larger of the two.
Browse By
Hemichordates (Acorn Worms and Relatives)
Filter Results2 entries
Sources
Tree of Life Web Project: Hemichordata
Tree of Life Web ProjectHemichordataQuote, Hemichordata
Hemichordata Acorn worms and pterobranchs
Animal Diversity Web: Hemichordata
Animal Diversity WebClassificationQuote, Classification
Class Enteropneusta Class Pterobranchia
GBIF Secretariat: GBIF Backbone Taxonomy, children of Hemichordata
GBIF SecretariatChildren of Hemichordata
"canonicalName":"Enteropneusta","vernacularName":"acorn worms [Enteropneusta]","authorship":"","nameType":"SCIENTIFIC","rank":"CLASS","origin":"SOURCE","taxonomicStatus":"ACCEPTED","nomenclaturalStatus":[],"remarks":"","numDescendants":199
Children of Hemichordata: Pterobranchia
"canonicalName":"Pterobranchia","vernacularName":"pterobranch","authorship":"","nameType":"SCIENTIFIC","rank":"CLASS","origin":"SOURCE","taxonomicStatus":"ACCEPTED","nomenclaturalStatus":[],"remarks":"","numDescendants":1137
View the Source Wikipedia: Acorn worm
Has Member: Acorn Worm, LeadQuote, Has Member: Acorn Worm, Lead
The acorn worms or Enteropneusta are a hemichordate class of invertebrates.
Wikipedia: Cephalodiscus
WikipediaHas Member: Cephalodiscus, LeadQuote, Has Member: Cephalodiscus, Lead
Cephalodiscus is a genus of hemichordates in the family Cephalodiscidae of the order Cephalodiscida.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.
Sign in to dispute this or suggest a correction.