Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


see ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information.
; tunicatetunicate
, marine animal of the phylum Chordata, which also includes the vertebrates. The adult form of most tunicates (also called urochordates) shows no resemblance to vertebrate animals, but such a resemblance is evident in the larva.
..... Click the link for more information.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
References in periodicals archive ?
Recent surveys of ascidians biodiversity on the northern Chilean coast (Clarke & Castilla, 2000; Schories et al., 2015; Turon et al., 2016a, 2016b) did not make any reference to members of the genus Ascidia.
The upright oval tunic (grey-white in preservative) is 18 mm high and 10 mm wide, and was attached to a siphon of a different ascidian (Pyura discoveryi).
Whole body regeneration in a colonial ascidian, Botrylloides violaceus.
Ultrastructure of vegetative and sporulation tages of Haplosporidium ascidiarum from the Ascidian Ciona intestinalis L.
To understand how maternal factors in ascidian eggs establish the initial state of the gene regulatory network, we need to understand how the four main maternal factors (along with other currently unknown factors, if any) induce these nine distinct patterns of gene expression.
The immunomodulatory and antioxidant activity of crude and fractionated extracts of the ascidian Styela clava were determined by in vitro screening.
A halogenated furanone rubrolide O isolated from a New Zealand ascidian Synoicum sp., which inhibited superoxide anion production in human neutrophils ([IC.sub.50] = 35 [micro]M) in vitro with low toxicity [28].
Havenhand, "Fertilization and the potential for dispersal of gametes and larvae in the solitary ascidian Ascidia mentula Muller," Ophelia, vol.
A significant 60% of silver salmon and ascidian, popular ingredients in Japanese cuisine, originate from Onagawa's fisheries.