Chordate - Wikipedia
A chordate (/ ˈkɔːrdeɪt / KOR-dayt) is a deuterostomic bilaterial animal belonging to the phylum Chordata (/ kɔːrˈdeɪtə / kor-DAY-tə). All chordates possess, at some point during their larval or …
脊索动物 - 维基百科，自由的百科全书
脊索动物 （英語： chordate）是隶属 脊索动物门 （學名：Chordata）的 动物，是 动物界 物种多样性 第三多的一个 门， 現存 物种 约81000餘種，仅次於属于 原口动物 的 节肢动物门 和 软 …
Chordate | Definition, Characteristics, & Facts | Britannica
2024年10月22日 · Chordate, any member of the phylum Chordata, which includes the vertebrates, the most highly evolved animals, as well as two other subphyla—the tunicates …
Chordate - Definition, Characteristics and Examples - Biology …
2019年4月7日 · A chordate is an animal that belongs to the phylum Chordata, which is part of the Deuterostomes kingdom. Organisms in the Deuterostomes kingdom have a distinct …
29.1: Chordates - Biology LibreTexts
Adult lancelets retain the four key features of chordates: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. Water from the mouth enters the pharyngeal slits, which …
29.1A: Characteristics of Chordata - Biology LibreTexts
2023年10月31日 · In chordates, it is located dorsally (at the top of the animal) to the notochord. In contrast to the chordates, other animal phyla are characterized by solid nerve cords that are …
Characteristics of chordates | Britannica
chordate , Any member of the phylum Chordata, which includes the most highly evolved animals, the vertebrates, as well as the marine invertebrate cephalochordates (see amphioxus) and …
Chordate - Evolution, Paleontology, Anatomy | Britannica
2024年10月22日 · Chordate - Evolution, Paleontology, Anatomy: Chordates may have originated earlier than 590 million years ago and predate the fossil record. Hemichordates are probably …
Phylum Chordata | manoa.hawaii.edu/ExploringOurFluidEarth
The phylum Chordata consists of animals with a flexible rod supporting their dorsal or back sides. The phylum name derives from the Greek root word chord - meaning string. Most species …
Chordates: Current Biology - Cell Press
2005年11月22日 · The chordates become unstable. Chordates are characterized by the presence of a notochord—at least transiently during embryogenesis —and a dorsal hollow nerve cord. …