What is Limnognathia?
{{italictitle}} {{Speciesbox | image = Limnognathia wikipedia.jpg | image_caption = Schematic drawing of ''Limnognathia maerski'' | display_parents = 5 | genus = Limnognathia | species = maerski | authority = [[Reinhardt Kristensen|Kristensen]] & [[Peter Funch|Funch]], 2000 }} '''''Limnognathia maerski''''' is a microscopic animal. It is a newly discovered type, found in [[spring (hydrosphere)|homothermic spring]]s on Disko Island, [[Greenland]] in 1994. Its place in [[taxonomy]] is uncertain. It is described as a [[Class (biology)|class]] or [[subphylum]] in the [[phylum]] [[Gnathifera (phylum)|Gnathifera]] or as a phylum in a Gnathifera [[superphylum]], called '''Micrognathozoa'''. It is related to the [[rotifer]]s and [[gnathostomulida]], grouped together as the Gnathifera.<ref name=Kristensen>{{cite journal |author=Kristensen RM |title=An Introduction to Loricifera, Cycliophora, and Micrognathozoa |url=https://archive.org/details/sim_integrative-and-comparative-biology_2002-06_42_3/page/641 |journal=Integr Comp Biol. |volume=42 |issue=3 |pages=641–51 |year=2002 |doi=10.1093/icb/42.3.641 |pmid=21708760}}</ref><ref>{{Cite web |url=http://www.catalogueoflife.org/info_hierarchy.php |title=Gordon, Dennis P. 2009. Towards a management hierarchy (classification) for the catalogue of life: draft discussion document. In ''Species 2000 & ITIS Catalogue of Life: 2009 Annual Checklist''. Bisby F.A. ''et al'' eds. CD-ROM; Species 2000: Reading, UK. |access-date=2013-07-17 |archive-date=2009-08-08 |archive-url=https://web.archive.org/web/20090808201530/http://www.catalogueoflife.org/info_hierarchy.php |url-status=dead }}</ref> With an average length of one-tenth of a millimetre, it is one of the smallest animals known. ''L. maerski'' has very complicated jaws, with fifteen separate parts. The parts of the jaw structure are connected by ligaments and muscles. The jaw parts are very small, ranging from 4 [[Micrometre|μm]] to 14 μm. The animal can extend part of its jaw structure outside of its mouth while eating. It also