Acanthomeridion
serratum
Phylum
Arthropoda
Geological
Time: Lower Cambrian (~525 million years ago)
Size: 16
mm long on a 45 mm by 38 mm matrix
Fossil
Site: Chengjiang Maotianshan Shales, Quiongzhusi Section, Yu'anshan
Member, Heilinpu FormationMaotianshan Hill, Yuxi, Chengjiang County, Yunnan
Province, China
| 
These unusual arthropods are known for their almost straight-sided
body. They have free cheeks like the trilobites, but are quite different
in overall appearance. The taxon is unknown outside the Chengjiang
Biota, and is a monotypic one with this being the only member of
its family. This is an exceptionally rare specimen from the Cambrian
Explosion.
Also
see: Chengjiang
Biota, Chengjiang
Fossils, Cambrian
Explosion | |
