Kinorhyncha

Also known as kinorhynchs

Kinorhyncha (, ' "snout") is a phylum of small marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos. They are commonly called mud dragons'''. Modern species are or less, but Cambrian forms could reach .

OverviewAI-generated

Kinorhyncha is a phylum of invertebrate animals within the kingdom Animalia. The group, commonly known as kinorhynchs or kaveljčniki, falls under the parent taxon Scalidophora in the superphylum Ecdysozoa. The taxon was described by Reinhard in 1885 and is currently accepted in taxonomic records.

These organisms inhabit marine and brackish environments. Specimens have been recorded in the United States, Costa Rica, Portugal, Thailand, and Tunisia. Collections are held by institutions including SIO, CAS, USNM, and NCSM. The taxon has 15,938 occurrence records and 1,453 associated records, with 14 media items available.

Synthesized by Vinony from 27 facts across 6 sources: Wikidata, GBIF, Gbif Occ, WoRMS, iDigBio, Vinony graph. Generated from structured data (not the Wikipedia text) and checked against those facts — may still contain errors.

Species

kinorhynchs

Kinorhyncha

PHYLUM

KingdomAnimalia
PhylumKinorhyncha

Habitatmarine, brackish

Observations recorded15,938

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via GBIF

Museum specimens

Specimen records: 1,453
With media: 14
Collections: SIO, CAS, USNM, NCSM
Recorded in: United States, Costa Rica, Portugal, Thailand, Tunisia

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Wikidata facts

Instance of: taxon
Subclass of: invertebrate
Parent taxon: Ecdysozoa
Image: Echinoderes hwiizaa.jpg

Show 6 more facts

taxon name: Kinorhyncha
taxon rank: phylum
Commons category: Kinorhyncha
topic's main category: Category:Kinorhyncha
described by source: Encyclopædia Britannica 11th edition
taxon common name: kaveljčniki

Sources (2)

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Encyclopedic overview

6 sections

Contents

Anatomy
Reproduction
Classification
Taxonomy
References
External links

Kinorhyncha (, ' "snout") is a phylum of small marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos. They are commonly called mud dragons'. Modern species are or less, but Cambrian forms could reach .

== Anatomy == thumb|left|Living Echinoderes specimen, showing movement and head retraction Kinorhynchs are limbless animals, with a body consisting of a head, neck, and a trunk of eleven segments. They are the only members of Ecdysozoa, except from the panarthropoda, with a segmented body; a feature that probably evolved independently from them. Juveniles have eight or nine segments, depending on genus, with the last two or three being added later during growth. A Cambrian species, Eokinorhynchus rarus, had about twice as many segments as present forms. Like other ecdysozoans they do not have external cilia, but instead have a number of spines along the body, plus up to seven circles of spines around the head. These spines are used for locomotion, withdrawing the head and pushing forward, then gripping the substrate with the spines while drawing up the body.

Excerpted from Wikipedia’s “Kinorhyncha” article, available under the CC BY-SA 4.0 licence.