Editing Cloudinidae (section)

==Fossil locations==
''Cloudina'' occurred in [[calcium carbonate]] rich areas of [[stromatolite]] reefs. It is found in association with ''[[Namacalathus]]'', which like ''Cloudina'' was "weakly skeletal" and solitary, and ''[[Namapoikia]]'', which was "robustly skeletal" and formed sheets on open surfaces.<ref>[http://gsa.confex.com/gsa/2005AM/finalprogram/abstract_90560.htm Neoproterozoic Microbial-Metazoan Reefs, Nama Region, Namibia] {{Webarchive|url=https://web.archive.org/web/20160307034553/http://gsa.confex.com/gsa/2005AM/finalprogram/abstract_90560.htm |date=2016-03-07 }} - abstract retrieved January 13, 2007</ref>

First found in the [[Nama Group]] in [[Namibia]],<ref name=Description /> ''Cloudina'' has also been reported in [[Oman]],<ref name=Conway1990>{{cite journal| author = Conway Morris, S.|author2=Mattes, B.W.|author3=Chen, M.| year = 1990| title = The early skeletal organism Cloudina: new occurrences from Oman and possibly China| journal = American Journal of Science| volume = 290| pages = 245–260}}</ref> [[China]]'s [[Dengying Formation]],<ref name=Conway1990 /><ref name=Bengtson1992>{{cite journal| author = Bengtson, S.|author2=Zhao, Y.| date = 1992-07-17| title = Predatorial Borings in Late Precambrian Mineralized Exoskeletons| journal = Science| volume = 257| issue = 5068| pages = 367–9| doi = 10.1126/science.257.5068.367| pmid = 17832833|bibcode = 1992Sci...257..367B |s2cid=6710335}}</ref> [[Canada]],<ref name=Hofmann2001>{{cite journal
 | author = Hofmann, H.J.
 |author2=Mountjoy, E.W.
 | date = 2001-12-01
 | title = Namacalathus-Cloudina assemblage in Neoproterozoic Miette Group (Byng Formation), British Columbia: Canada's oldest shelly fossils
 | journal = Geology
 | volume = 29
 | issue = 12
 | pages = 1091–1094
 | doi = 10.1130/0091-7613(2001)029<1091:NCAINM>2.0.CO;2
 | issn = 0091-7613
 |bibcode = 2001Geo....29.1091H 
 }}</ref> [[Uruguay]],<ref name=Gaucher1998>{{cite journal
 | author = Gaucher, C.
 |author2=Sprechmann, P.
 | year = 1998
 | title = Grupo Arroyo del Soldado: paleontologia, edad y correlaciones (Vendiano-Cámbrico Inferior, Uruguay)
 | journal = Actas II Congreso Uruguaya de Geologia, Montevideo, Sociedad Uruguaya de Geologia — Facultad de Ciencias
 | pages = 183–187
 | language=es
 }}</ref><ref name=Gaucher2000>{{cite book
 | author = Gaucher, C.
 | year = 2000
 | title = Sedimentology, palaeontology, and stratigraphy of the Arroyo del Soldado Group (Vendian to Cambrian, Uruguay)
 }}</ref> [[Argentina]],<ref>by Yochelson and Herrera, 1974; they could have mistaken them for ''Salterella''. See Grant 1990 for reference and discussion.</ref> [[Antarctica]],<ref name="Yochelson1977">{{cite journal|author=Yochelson, E.L.|author2=Stump, E.|year=1977|title=Discovery of Early Cambrian Fossils at Taylor Nunatak, Antarctica|journal=[[Journal of Paleontology]]|volume=51|issue=4|pages=872–875|issn=0022-3360|jstor=1303753}}<!--| access-date = 2007-05-18--></ref> [[Brazil]],<ref>{{Cite journal |last=Oliveira |first=Rick Souza de |last2=Nogueira |first2=Afonso César Rodrigues |last3=Romero |first3=Guilherme Raffaeli |last4=Truckenbrodt |first4=Werner |last5=da Silva Bandeira |first5=José Cavalcante |date=December 2019 |title=Ediacaran ramp depositional model of the Tamengo Formation, Brazil |url=https://linkinghub.elsevier.com/retrieve/pii/S0895981119300197 |journal=[[Journal of South American Earth Sciences]] |language=en |volume=96 |pages=102348 |doi=10.1016/j.jsames.2019.102348 |access-date=7 July 2024 |via=Elsevier Science Direct}}</ref><ref name=Zaine1985>{{cite journal
 | author = Zaine, M.F.
 |author2=Fairchild, T.R.
 | year = 1985
 | title = Comparison of Aulophycus lucianoi Beurlen & Sommer from Ladario (MS) and the genus Cloudina Germs, Ediacaran of Namibia
 | journal = Anais da Academia Brasileira de Ciências
 | volume = 57
 | pages = 130
 }}</ref> [[Nevada]],<ref name=HAGADORN2000>{{Cite journal
 | author = Hagadorn, J.W.
 |author2=Waggoner, B.
 | year = 2000
 | title = Ediacaran fossils from the southwestern Great Basin, United States
 | url = http://jpaleontol.geoscienceworld.org/cgi/content/abstract/74/2/349
 | journal = [[Journal of Paleontology]]
 | doi = 10.1666/0022-3360(2000)074<0349:EFFTSG>2.0.CO;2
 | volume = 74
 | pages = 349
 | issn = 0022-3360
 | issue = 2
 |s2cid=130774342
 }}</ref> central [[Spain]], northwest [[Mexico]] and [[California]],<ref name=Grant1990 />
in west and south [[Siberia]]. The ''Cloudina'' fossils found in association with late Precambrian-Early Cambrian [[Anabarites|anabaritids]] SSF and tubular agglutinated skeletal fossils ''[[Platysolenites]]'' and ''[[Spirosolenites]]'' in Siberia.<ref name='Kontorovich2008'>{{cite journal
 | title = A section of Vendian in the east of West Siberian Plate (based on data from the Borehole Vostok 3)
 | year = 2008
 | journal = Russian Geology and Geophysics
 | volume = 49
 | pages = 932
 | doi = 10.1016/j.rgg.2008.06.012
 | last1 = Kontorovich
 | first1 = A.
 | last2 = Varlamov
 | first2 = A.
 | last3 = Grazhdankin
 | first3 = D.
 | last4 = Karlova
 | first4 = G.
 | last5 = Klets
 | first5 = A.
 | last6 = Kontorovich
 | first6 = V.
 | last7 = Saraev
 | first7 = S.
 | last8 = Terleev
 | first8 = A.
 | last9 = Belyaev
 | first9 = S.
 | display-authors= 8
 | issue = 12
 | bibcode = 2008RuGG...49..932K
}}</ref><ref name="Zhuravlev 2009">{{cite journal|author=Andrey Yu. Zhuravlev |author2=Jose Antonio Gamez Vintaned |author3=Andrey Yu. Ivantsov |date=September 2009|title=First finds of problematic Ediacaran fossil ''Gaojiashania'' in Siberia and its origin|journal=Geological Magazine|volume=146|issue=5|pages=775–780| url=http://geolmag.geoscienceworld.org/cgi/content/abstract/146/5/775 | doi=10.1017/S0016756809990185|bibcode=2009GeoM..146..775Z|s2cid=140569611 }}</ref>
<!-- ********* duplicated
and although it is never in the same bed as "Vendozoan-type" (soft-bodied) [[Ediacaran biota|Ediacaran fossils]], it is sometimes interbedded with them, suggesting that the two classes of fossil may have occupied different habitats in close proximity.
********** --><!--
--><!-- Unreferenced **********
 This co-existence stands against [[Mark McMenamin]]'s hypothesis that the advent of skeletonisation caused the extinction of soft-bodied Ediacaran forms; however the disappearance of ''Cloudina'' at the [[Ediacaran]] - Cambrian boundary suggests that an [[extinction event]] may have occurred, which may have been related to the subsequent [[Cambrian explosion]] of life-forms. Although no Cloudinid body fossils have been found after the Ediacaran period, it has been suggested that the enigmatic trace fossils ''[[Salterella]]'' and ''[[Cornulites]]'' were formed by Cloudinids.  ********* -->