Category: Urochordata

Belongs within: Urochordata.Contains: Ascidia, Didemnidae, Polyclinidae, Thaliacea. The Enterogona are a group of tunicates united by features of the larva, in which the atrial cavity develops from paired dorsal invaginations. Within this group, the Aplousobranchiata have a simple branchial sac and are often colonial. <==Enterogona [Phlebobranchiata] |–CorellidaeMS24 | |–Dextrogaster Monniot 1962M86 | | `–D. suecica… Continue reading Enterogona

Belongs within: Deuterostomia.Contains: Enterogona, Pleurogona. The Urochordata, tunicates, are spineless chordates that possess a notochord and postanal tail in the tadpole-like larval stage but usually loose them when they metamorphose into adults. The tail is retained throughout life in the pelagic Appendicularia, which construct ‘houses’ around the body out of mucus that function in capturing… Continue reading Urochordata

Belongs within: Urochordata.Contains: Polycarpa. The Pleurogona are a group of tunicates characterised by a folded pharyngeal basket, and the lack of an abdomen. Branched tentacles are present around the base of the branchial siphon in Pyuridae and Molgulidae, whereas these tentacles are unbranched in Styelidae. <==Pleurogona [Stolidobranchiata] |–MolgulidaeMG-H11 | |–Eugyra arenosaM62 | |–BostrichobranchusSM10 | `–Molgula… Continue reading Pleurogona

Belongs within: Enterogona. The Didemnidae are a group of tunicates whose small zooids form encrusting colonies. <==Didemnidae |–AtriolumMG-H11 | |–A. bucinum Kott 2001MG-H11 | `–A. tubiporum Kott 2001MG-H11 |–LissoclinumMS98 | |–L. badium Monniot & Monniot 1996BS17 | |–L. bistratum (Sluiter 1905)BS17 | |–L. maculatum Kott 2001MG-H11 | |–L. molleMS98 | |–L. patella (Gottschaldt 1898)BS17 |… Continue reading Didemnidae