Yorgiidae
Extinct species of disc-shaped organism
| Yorgiidae Temporal range: 635.0–541.0 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | †Proarticulata |
| Class: | †Cephalozoa |
| Family: | †Yorgiidae Ivantsov, 2001 |
| Genera | |
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Yorgiidae is an extinct family of cephalozoans, which lived 635 million years ago.[1] They were filter fed.[2]
Description
Like most proarticulates, they present semi-bilateral symmetry. They had a discoid appearance, with the body segmented by isomers.
Distribution
Ediacaran of Russian Federation and South Australia.[1]
Gallery
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Other fossil of Archaeaspinus fedonkini -
Epibaion waggoneri, possible ichnofossil of Yorgia waggoneri
See also
paleontology portal
References
- ^ a b Distribution age in the paleontology database
- ^ Budd, Graham E.; Jensen, Sören (2017). "The origin of the animals and a 'Savannah' hypothesis for early bilaterian evolution". Biological Reviews. 92 (1): 446–473. doi:10.1111/brv.12239. hdl:10662/8091. ISSN 1469-185X. PMID 26588818. S2CID 39110115.
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