Cornulites
{{Short description|Genus of cornulitid tubeworms}}
{{Italic title}}
{{Taxobox
| name = Cornulites
| fossil_range = {{fossil range|Mid Ordovician|Carboniferous|ref=}}
| image = Cornulites cellulosus.jpg
| image_caption = Cornulites cellulosus from Wenlock of Saaremaa, Estonia.
| regnum = Animalia
| phylum = Incertae sedis
| classis = Tentaculita†
| ordo = Cornulitida†
| familia = Cornulitidae†
| genus = Cornulites†
| genus_authority = Schlotheim, 1820
| subdivision =
| subdivision_ranks = Species
}}
Cornulites is a genus of cornulitid tubeworms. Their shells have vesicular wall structure, and are both externally and internally annulated. They usually occur as encrusters on various shelly fossils. Their fossils are known from the Middle Ordovician to the Carboniferous.{{cite journal
| author = Vinn, O.
| year = 2010
| title = Adaptive strategies in the evolution of encrusting tentaculitoid tubeworms
| journal = Palaeogeography, Palaeoclimatology, Palaeoecology
| volume = 292
| issue = 1–2
| pages = 211–221
| doi=10.1016/j.palaeo.2010.03.046
| bibcode = 2010PPP...292..211V
| author = Vinn, O.
|author2=Mutvei, H.
| year = 2009
| title = Calcareous tubeworms of the Phanerozoic
| journal = Estonian Journal of Earth Sciences
| volume = 58
| issue = 4
| pages = 286–296
| url = http://www.kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2009/issue_4/earth-2009-4-286-296.pdf
| accessdate = 2012-09-16
| doi=10.3176/earth.2009.4.07
| doi-access = free
| doi = 10.4267/2042/51214
| title = Cornulitid tubeworms from the Ordovician of eastern Baltic
| year = 2013
| author = Vinn, O
| journal = Carnets de Géologie
| volume =
| pages = 131–138
| url = http://paleopolis.rediris.es/cg/CG2013_L03/index.html
| accessdate = 2013-07-25| doi-access =
| doi = 10.4267/2042/53034
| title = Silurian cornulitids of Estonia (Baltica)
| year = 2013
| author = Vinn, O
|author2=Wilson, M.A.
| journal = Carnets de Géologie
| volume =
| pages = 357–368
| url = http://paleopolis.rediris.es/cg/CG2013_A09/index.html
| accessdate = 2013-12-27| doi-access = free
}}