Leptothecata, or thecate hydroids, are an order of hydrozoans in the phylum Cnidaria. Their closest living relatives are the athecate hydroids, which are similar enough to have always been considered closely related, and the very apomorphic Siphonophorae, which were placed outside the "Hydroida". … 查看更多內容 Colony architecture among Leptothecata comprises extensive diversity found in the hydrozoans. Their life cycles have been found to be connected with changes in colony shapes. Zooid polymorphism within the colonies are … 查看更多內容 Leptothecata have distinguishing factors in the presence of morphological dimorphism. The dimorphism in the species classes has led to great complexity … 查看更多內容 • Air fern (Sertularia argentea), sold dried as novelty "plants" and aquarium ornaments • Crystal jelly (Aequorea victoria), a bioluminescent hydrozoan 查看更多內容 Among Leptothecata’s diversified species, they have great variability within their organization and life cycles. Leptothecata can be found … 查看更多內容 The thecate hydroids were formerly placed in the paraphyletic "Hydroida" as the suborder Leptomedusa. Currently, the following families are classified within the order … 查看更多內容 網頁2011年12月31日 · New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia Zenodo December 31, …
(PDF) Probable advanced hydroid from the Early Ordovician of …
網頁A thecate hydroid with a hydrotheca long enough to enclose the hydranth, feeding polyp, when fully contracted. The bell or goblet shaped hydrotheca lacks an operculum, but … 網頁The sea thread hydroid is a colony-forming polyp. The colonies can be recognized by their long, limp, strongly branched, horny threads. Small polyps are located at the end of the branches. This species can wash ashore in massive amounts, particularly in the autumn. Another name for the sea thread hydroid is the bushy wine-glass hydroid. bottle cap goggles gifs
Association between Dentitheca habereri (Cnidaria: Hydrozoa) and …
網頁2007年11月30日 · This report considers five species of hydroids collected during a scientific expedition to the Northern Patagonian Zone of Chile in March 2007. Two poorly known species, Halecium fraseri Ralph, 1958 (Haleciidae) and Thuiaria polycarpa Kirchenpauer, 1884 (Sertulariidae), are redescribed from new, fertile material. 網頁乙酸鈣是鈣的乙酸鹽，分子式為Ca(C 2 H 3 O 2) 2。乙酸鈣的常用名是醋酸鈣。無水乙酸鈣的吸濕性非常好，因此常見的乙酸鈣都以一水合（Ca(CH 3 COO) 2.H 2 O，CAS [5743-26 …網頁Athecate hydroids (order Anthoathecata) have polyps that live solitary or in colonies and are not protected by a hydrotheca. Most athecate hydroid jellyfish have a bell-shaped body … bottle cap free games