Lancelet - Wikipedia
Lancelets contain many organs and organ systems that are homologous to those of modern fish, but in a more primitive form. Therefore, they provide a number of examples of possible …
Lancelet - AnimalFact.com
2024年8月20日 · Lancelets, or amphioxi, are tiny, fish-like marine organisms that belong to the subphylum Cephalochordata, in the class Leptocardii. They get their name ‘lancelets’ due to …
Natural History, Features & Evolution - Britannica
Lancelets are distributed throughout the world along tropical and temperate coasts. They inhabit soft bottoms ranging from sand to coarse shelly sand or gravel in shallow coastal water. …
Introduction to the Cephalochordata - University of California …
Known as lancelets or as amphioxus (from the Greek for "both [ends] pointed," in reference to their shape), cephalochordates are small, eel-like, unprepossessing animals that spend much …
Cephalochordata: Subphylum Of The Ancient Lancelets
2020年2月16日 · The lancelet body is designed with three openings: a mouth – guarded by tentacles – called buccal cirri and through which water enters, an atriopore – towards the …
Cephalochordata (Lancelets) - Encyclopedia.com
Cephalochordates (also called acraniates or lancelets) possess key features that characterize them as chordates. Those characters include the notochord, dorsal nerve cord, branchial …
Lancelets: Cephalochordata - Encyclopedia.com
Scientists consider lancelets the closest living relatives to vertebrates (VER-teh-brehts), or animals with a backbone. The two groups share traits such as the organization of the main …
Lancelet | Encyclopedia.com
2018年5月11日 · lancelet, name for small, fishlike lower chordate (see Chordata [1]), also called amphioxus; it shows many affinities with the vertebrates. There are about 30 lancelet species, …
Cephalochordate - Anatomy, Physiology, Evolution | Britannica
Lancelets are suspension feeders that extract small particles suspended in the water. The mouth is covered by an oral hood, the edges of which form the buccal cirri. The cephalochordate …
LanceletDB: an integrated genome database for lancelet, …
Lancelet (amphioxus), in particular, represents the most basally divergent living cephalochordate that diverged from urochordates and vertebrates 550 million years ago and retains a body plan …