Definitions for chordata
chor·da·ta

Princeton's WordNetRate this definition:3.3 / 3 votes

1. Chordata, phylum Chordatanoun

   comprises true vertebrates and animals having a notochord

WikipediaRate this definition:0.0 / 0 votes

1. chordata

   A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These five synapomorphies include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, and a post-anal tail. The name “chordate” comes from the first of these synapomorphies, the notochord, which plays a significant role in chordate structure and movement. Chordates are also bilaterally symmetric, have a coelom, possess a circulatory system, and exhibit metameric segmentation. 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 mitochondrial inner 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 metazoan. Chordates are divided into three subphyla: Craniata (fish, amphibians, reptiles, birds, and mammals); Tunicata or Urochordata (sea squirts, salps); and Cephalochordata (which includes lancelets). The Craniata and Tunicata compose the clade Olfactores, which is sister to Cephalochordata. (See diagram under Phylogeny.) Extinct taxa such as Vetulicolia and Conodonta are Chordata, but their internal placement is less certain. Hemichordata (which includes the acorn worms) was previously considered a fourth chordate subphylum, but now is treated as a separate phylum: hemichordates and Echinodermata form the Ambulacraria, the sister phylum of the Chordates. The Chordata and Ambulacraria, together and possibly with the Xenacoelomorpha, form the superphylum Deuterostomia. Chordate fossils have been found from as early as the Cambrian explosion, 539 million years ago. Cladistically (phylogenetically), vertebrates – chordates with the notochord replaced by a vertebral column during development – are a subgroup of the clade Craniata, which consists of chordates with a skull. Of the more than 65,000 living species of chordates, about half are ray-finned fishes that are members of the class Actinopterygii and the vast majority of the rest are tetrapods (mostly birds and mammals).

ChatGPTRate this definition:0.0 / 0 votes

1. chordata

   Chordata is a large phylum in the animal kingdom that includes more than 65,000 species classified under various subphyla, classes and orders, including vertebrates like mammals, birds, reptiles, amphibians, and fish. The defining characteristic of chordates is the presence of a notochord, a flexible, rod-shaped body that extends the length of the creature's body, at some stage of their development. Other shared characteristics may include a dorsal neural tube, pharyngeal slits, an endostyle, and a post-anal tail.

Webster DictionaryRate this definition:4.5 / 2 votes

1. Chordata

   a comprehensive division of animals including all Vertebrata together with the Tunicata, or all those having a dorsal nervous cord

2. Etymology: [NL., fr. L. chorda cord.]

U.S. National Library of MedicineRate this definition:3.0 / 1 vote

1. Chordata

   Phylum in the domain Eukarya, comprised of animals either with fully developed backbones (VERTEBRATES), or those with notochords only during some developmental stage (CHORDATA, NONVERTEBRATE).

Matched Categories

1. • Phylum

How to pronounce chordata?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

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   Zira

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   Oliver

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   Wendy

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   Fred

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   Tessa

   South African

How to say chordata in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of chordata in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of chordata in Pythagorean Numerology is: 7

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References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=chordata
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Chordata
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/chordata