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Chordata
Also known as chordate, chordates
A chordate ( ) is a bilaterian animal belonging to the phylum Chordata ( ). All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics (synapomorphies) that distinguish them from other taxa: a notochord, a hollow dorsal nerve cord, an endostyle or thyroid, pharyngeal slits, and a post-anal tail.
AI overview
Chordates are a group of animals that includes humans and all other vertebrates, defined by five distinctive physical features they share at some stage of their development: a notochord, a hollow dorsal nerve cord, an endostyle or thyroid, pharyngeal slits, and a post-anal tail. Understanding chordates matters because this phylum encompasses the vast majority of large, complex animals on Earth, including fish, amphibians, reptiles, birds, and mammals.
AI-generated from the Wikipedia summary — may contain errors.
Species
chordadieren
Chordata
PHYLUM
- KingdomAnimalia
- PhylumChordata
Habitatmarine, brackish, freshwater
Observations recorded2,534,061,025
脊索动物门（学名：Chordata）是指有脊索，或其在演化过程退化而被脊椎取代的动物。是动物界最高等的门。脊索动物的共同特征包括：在生活史中的某个阶段具有脊索、中空的背神经管、咽鳃裂以及肛后尾。 脊索动物门可以分为尾索动物亚门、头索动物亚门和脊椎动物亚门三个亚门。其中尾索动物亚门和头索动物亚门可以合称为“原索动物”，生活在海洋中。尾索动物幼虫期具有脊索和神经索，但在成体消失。头索动物终生保留脊索和神经索。在脊椎动物中，脊索作用由骨质脊柱代替。 少数学者提出将半索动物门也置于脊索动物门下，并命名为口索动物亚门。 通常说的脊椎动物学主要是指研究脊索动物的一个动物学分支，不單單是研究脊椎动物门。
via GBIF
Research
28,127,225 papers- Vertebrate innovations.ReviewProceedings of the National Academy of Sciences of the United States of America · 2000Shimeld SM, Holland PWDOI: 10.1073/pnas.97.9.4449
~21 min read
Article
17 sectionsContents
- Etymology
- Anatomy
- Classification
- Subphyla
- Cephalochordata: Lancelets
- Tunicata (Urochordata)
- Vertebrata (Craniata)
- Phylogeny
- Overview
- Cladogram
- Closest non-chordate relatives
- Hemichordates
- Echinoderms
- See also
- Notes
- References
- External links
A chordate ( ) is a bilaterian animal belonging to the phylum Chordata ( ). All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics (synapomorphies) that distinguish them from other taxa: a notochord, a hollow dorsal nerve cord, an endostyle or thyroid, pharyngeal slits, and a post-anal tail.
In addition to the morphological characteristics used to define chordates, analysis of genome sequences has identified two conserved signature indels (CSIs) in their proteins: cyclophilin-like protein and inner mitochondrial membrane protease ATP23, which are exclusively shared by all vertebrates, tunicates and cephalochordates. These CSIs provide molecular means to reliably distinguish chordates from all other animals.