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Cephalochordata

Line breaks: Ceph¦alo|chord¦ata
Pronunciation: /ˌsɛfələ(ʊ)kɔːˈdeɪtə
 
, ˌkɛ-/

Definition of Cephalochordata in English:

plural noun

Zoology
A small group of marine invertebrates that comprises the lancelets.
Example sentences
  • For this reason, the three subphyla, Urochordata, Cephalochordata, and Vertebrata, will be treated separately.
  • Although this classification is widely accepted, some authors recognize three chordate phyla: Urochordata for the urochordates, Cephalochordata for the lancelets, and Vertebrata for the vertebrates.
  • Deuterostomia are a major group of metazoans composed of three phyla: Chordata (including three subphyla: Vertebrata, Cephalochordata, and Urochordata), Hemichordata, and Echinodermata.

Origin

modern Latin (plural), from cephalo- 'head' + Greek chorda 'cord'.

Derivatives

cephalochordate

1
Pronunciation: /ˌsɛfələ(ʊ)ˈkɔːdeɪt, ˌkɛ-/
noun& adjective
Example sentences
  • Five major groups are usually recognized within Deuterostomia at the level of phylum: hemichordates, echinoderms, cephalochordates, urochordates, and vertebrates.
  • Comparative developmental studies of chordates have demonstrated that these regulatory genes are expressed in a conserved manner across the spectrum of body plans displayed by urochordates, cephalochordates and vertebrates.
  • Also, unlike the vertebrate and cephalochordate genes, the ascidian homologues are not detected in mesodermal tissues.

Definition of Cephalochordata in:

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