During Cambrian animals evolved which could dig into the sediments on the ocean floor.

Future
Good. Trilobites came to dominate faunas for 100 milion years.
Favoritefood
Small animals
Favorite place
Seafloor
Founding place
Toutasemant, Morocco
Future
Good. Trilobites came to dominate faunas for 100 milion years.
Favoritefood
Small animals
Favorite place
Seafloor
Founding place
Jince, Czech Republic
Future
Excellent. Arthropods own the future!
Favoritefood
Small animals
Favorite place
Seafloor
Founding place
Chengjiang, Yunnan Province, China
Future
Very good. Gave rise to both insect and crustaceans.
Favoritefood
Plankton
Favorite place
Seafloor
Founding place
Gössäter, Västergötland, Sweden
Future
Excellent. Gave rise to seastars, echinoids and sea lilies.
Favoritefood
Plankton and tiny animals
Favorite place
Seafloor
Founding place
Walesville Mountains, USA
Future
Good. This was the beginning of a 300 milion years of succes.
Favoritefood
Plankton
Favorite place
Seafloor
Founding place
Lugnås, Västergötland, Sweden
Future
Good. This was the beginning of a 300 milion years of succes.
Favoritefood
Plankton
Favorite place
Seafloor
Founding place
Lugnås, Västergötland, Sweden
Future
Good. Trilobites came to dominate faunas for 100 milion years.
Favoritefood
Slime at seafloor
Favorite place
Havsbotten
Founding place
Jince, Czech Republic
Future
Very good
Favoritefood
Bacteria and plankton
Favorite place
Havsbotten
Founding place
Kalmarsund, Småland, Sweden
Future
Very good
Favoritefood
Bacteria and slime
Favorite place
Seafloor
Founding place
Lugnås, Västergötland, Sweden
Future
Very good
Favoritefood
Worms
Favorite place
Seafloor
Founding place
Hjälmsäter, Västergötland, Sweden