- Small, fishlike marine invertebratescephalochordate, any of more than two dozen species belonging to the subphylum Cephalochordata of the phylum Chordata. Small, fishlike marine invertebrates, they probably are the closest living relatives of the vertebrates. Cephalochordates and vertebrates have a hollow, dorsal nerve cord, pharyngeal gill slits, and a notochord.www.britannica.com/animal/cephalochordate
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- Woordenlijstnouncephalochordate (zelfstandig naamwoord) · cephalochordates (meervoud van zelfstandig naamwoord)
- a marine invertebrate of the subphylum Cephalochordata; a lancelet:"the great similarities between cephalochordates and vertebrates"
adjectivecephalochordate (bijvoeglijk naamwoord)- relating to or denoting cephalochordates:"cephalochordate genes"
Cephalochordate | Natural History, Features & Evolution
- The lancelets are also called cephalochordates (Greek: kephale, “head”) because the notochord extends from near the tip of the tail to well into the anterior of the body. …
- The bodies of lancelets, like those of fishes and other vertebrates, are largely made up of serially repeated units (segments) that include blocks of … Meer weergeven
cephalochordate, any of more than two dozen species belonging to the subphylum Cephalochordata of the phylum Chordata. Small, fishlike marine invertebrates, they probably are the closest living relatives of the vertebrates. Cephalochordates … Meer weergeven
- Lancelet sexes are separate, and asexual reproduction does not occur. Eggs and s…
- Britannica Quiz Meer weergeven
Adult lancelets reach a length of about six to seven centimetres (2.5 inches). There is little structural diversity within the group, the main … Meer weergeven
Although edible, lancelets are never sufficiently abundant to constitute a significant source of food to humans or an important part of the food chain in nature. Rather, their significance has to do with their place in evolution, as invertebrates transitional to … Meer weergeven
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Cephalochordata: Definition, Characteristics, Classification
Web28 nov. 2023 · Cephalochordata (Gr., kephale, head; chorde, cord) is a sub-phylum within the phylum Chordata. The animals in this group are small, marine invertebrates. They …
Introduction to the Cephalochordata - University of …
WebThe sexes are separate, and both males and females have multiple paired gonads. Eggs are fertilized externally, and develop into free-swimming, fishlike larvae. Since cephalochordates have no hard parts, their fossil …
Cephalochordata - an overview | ScienceDirect Topics
WebCephalochordata is defined as the most recent common ancestor of lancelets and Craniata, and all of that ancestor's descendants. Cephalochordates are diagnosed by the …
Cephalochordate Definition and Examples - Biology Online …
Web24 jun. 2021 · Definition. noun, plural: cephalochordates. Any of the small, elongated, segmented, fish-like chordates that belong to the subphylum Cephalochordata, such …
5.9.2: Chordates - Biology LibreTexts
WebTwo clades of chordates are invertebrates: Cephalochordata and Urochordata. Members of these groups also possess the five distinctive features of chordates at some point during …
Cephalochordata | Encyclopedia.com
Web14 mei 2018 · The cephalochordates are the closest living relatives of the vertebrates. The group derives its name from the notochord that extends far forward into the head …
29.1B: Chordates and the Evolution of Vertebrates
Web29.1: Chordates. Expand/collapse global location. 29.1B: Chordates and the Evolution of Vertebrates. Page ID. Boundless. Chordata contains two subphylums of invertebrates: …
Cephalochordate Nervous System | Oxford Research …
WebDevelopment. Molecular and Cellular Systems. Invertebrate Neuroscience. Introduction. Amphioxus ( amphis = both, oxys = sharp), also known as the lancelet, is a cephalochordate distributed in tropical and temperate seas.
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