Five-Fold Symmetry
Bizarre 500-Million-Year-Old Creature Unearthed - (2013)
During the Cambrian explosion, the diversity of life exploded and bizarre sea creatures such as the Helcocystis moroccoensis flourished. - (Credit: Andrew Smith)
The Cambrian EXPLOSION.
During the Cambrian explosion, the diversity of life exploded and bizarre sea creatures such as the Helcocystis moroccoensis flourished. - (Credit: Andrew Smith)
The Cambrian EXPLOSION.
- Cambro-Ordovician extinction event - circa 488 mya
- Dresbachian extinction event-circa 502 mya
- End Botomian extinction event-circa 517 mya