Hemichordate | Marine Invertebrate Biology | Britannica
hemichordate, any of a group of wormlike marine invertebrates closely related to both chordates and echinoderms and usually considered to constitute a phylum, the Hemichordata.
Phylum Hemichordata- Characteristics, classification, examples
2023年8月3日 · Hemichordata Definition. Hemichordata (Gr., hemi, half; chorde, cord) means they are ‘half’ of ‘part’ chordates, a fact that is disputed. They are usually vermiform, solitary, or colonial enterocoelous coelomate animals with an intra-epidermal nervous system and a pre-oral with or without gill-slits and without typical nephridia.
Hemichordates - MarineBio Conservation Society
Hemichordates are a phylum of marine invertebrates that are considered to be closely related to both echinoderms (such as sea stars and sea urchins) and chordates (which include vertebrates like fish, birds, and humans).
Phylum Hemichordata - Definition, Classification, Characteristics ...
2024年3月31日 · Phylum Hemichordata is a small marine phylum of worm-like animals known as Acorn Worms. They are distinct from chordates and serve as important connecting links between vertebrates and invertebrates. Phylum Hemichordata exhibits the following characteristics:
The Global Diversity of Hemichordata | PLOS ONE
2016年10月4日 · Hemichordata is a phylum of marine invertebrates occupying an extensive range of ocean depths and habitats. “Hemichordata” Bateson, 1885 comes from the Greek prefix hemi (“half”) and the Latin root chorda (“cord”) .
Phylum Hemichordata: Characteristics, Classification, Examples
Phylum Hemichordata is a small phylum with only a 100 known species, with animals having a worm-like appearance. Some species may be solitary or some occur in colonies. Let us study them further.
Hemichordata World Database - World Register of Marine Species
Hemichordata is a unique phylum of marine invertebrates found in a wide range of depths and habitats. Two distinctly different body plans exist in this phylum: the large, solitary acorn worms (Class Enteropneusta), and the filter-feeding colonies of the class Pterobranchia.
Hemichordate genomes and deuterostome origins | Nature
2015年11月18日 · Hemichordates share bilateral symmetry, gill slits, soft bodies and early axial patterning with chordates, making them key comparators for inferring the ancestral genomic features of...
Phylum Hemichordata: Definition, Characteristics, Classification
2023年11月12日 · Phylum Hemichordata is a group of marine deuterostomes having proboscis, collar, and trunk in the body with pharyngeal gill slits and intra-epidermal nervous system. The animals are exclusively marine. They remain either solitary or form colonies.
Hemichordata | Structure and Evolution of ... - Oxford Academic
Hemichordates consist of the two exclusively marine taxa, Pterobranchia (angelwings) and Enteropneusta (acorn worms). All hemichordates feature three body parts: the prosome, the mesosome, and the metasome. The major part of the nervous system in both hemichordate groups comprises a plexus.
- 某些结果已被删除