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'''클라우디나류클라우디나과'''는 초기 [[후생동물]] [[과]]로 '''아쿠티코클라우디나''', '''클라우디나''', 그리고 '''코노투부스'''를 포함하며포함하는 후기초기 [[에디아카라기후생동물]], [[과]](Family)로 약 5억5천만 년 전에전 즉 후기 [[에디아카라기]]에 살았으며,<ref name="NYT-20200110">{{뉴스 인용|url=https://www.nytimes.com/2020/01/10/science/fossil-guts-intestines.html|title=Fossil Reveals Earth’s Oldest Known Animal Guts - The find in a Nevada desert revealed an intestine inside a creature that looks like a worm made of a stack of ice cream cones.|last=Joel|first=Lucas|date=10 January 2020|work=[[The New York Times]]|accessdate=10 January 2020}}</ref><ref name="NAT-20200110">{{저널 인용|이탤릭체=예|author=Schiffbauer, James D. |display-authors=et al. |title=Discovery of bilaterian-type through-guts in cloudinomorphs from the terminal Ediacaran Period |url=https://www.nature.com/articles/s41467-019-13882-z |date=10 January 2020 |journal=[[Nature Communications]] |volume=11 |number=205 |doi=10.1038/s41467-019-13882-z |accessdate=10 January 2020 }}</ref> [[캄브리아기]] 초에 멸종했다.<ref name="Yang2016">{{cite journal|doi=10.1016/j.precamres.2016.09.016|title=Transitional Ediacaran–Cambrian small skeletal fossil assemblages from South China and Kazakhstan: Implications for chronostratigraphy and metazoan evolution|journal=Precambrian Research|volume=285|pages=202–215|year=2016|last1=Yang|first1=Ben|last2=Steiner|first2=Michael|last3=Zhu|first3=Maoyan|last4=Li|first4=Guoxiang|last5=Liu|first5=Jianni|last6=Liu|first6=Pengju|bibcode=2016PreR..285..202Y}}</ref> 클라우디나는 수 밀리미터 정도 크기의 원뿔모양 [[화석]]으로 석회암 성분의 원뿔이 겹쳐져 있는 형태이며 그 안에 살았던 동물의 형태는 알려져 있지 않다. 클라우디나라는 이름은 20세기의 지질학자이자 고생물학자인 [[프레스턴 클라우드]]를 기리기 위한 것이다.<ref name=Description>{{저널 인용|이탤릭체=예
| doi=10.2475/ajs.272.8.752
| author=Germs, G.J.B. | title=New shelly fossils from Nama Group, South West Africa
| journal=American Journal of Science |date=October 1972 | volume=272 | pages=752–761
| issue=8
| bibcode=1972AmJS..272..752G}}</ref>
| bibcode=1972AmJS..272..752G}}</ref> Fossils consist of a series of stacked vase-like [[calcite]] tubes, whose original mineral composition is unknown,<ref name="Porter2007">{{cite journal
| journal=Science | date= 1 June 2007 |volume= 316 |issue=5829 |doi= 10.1126/science.1137284
| title= Seawater Chemistry and Early Carbonate Biomineralization |author=Porter, S.M.
| pages = 1302 | pmid= 17540895 | bibcode=2007Sci...316.1302P
}}</ref>
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