Tag

Terrestrialization

All articles tagged with #terrestrialization

biology2 years ago•2 min saved

The Evolutionary Journey of Crabs: From Sea to Land and Back

A new study has found that true crabs (Brachyura) have evolved to migrate from marine to land habitats between seven and 17 times over the past 100 million years. Some crabs even returned to the sea from land on two or three occasions. Most crabs are only able to survive in semi-terrestrial habitats, with land-based crabs concentrated in one species-rich group. The findings suggest that true crabs emerged about 45 million years earlier than previously estimated, dating back to the mid-Triassic period.

via Livescience.com|

#biology #crabs #evolution

science2 years ago•4 min saved

Crabs' Ancient Journey: From Sea to Land and Back

A new study reveals that true crabs (Brachyura) have left the marine environment multiple times, with around 17 independent transitions to land and freshwater over the past 100 million years. The research, spanning almost 20 years, found that true crabs are older than previously estimated, dating back to the Middle Triassic. The study provides insights into convergent evolution and the adaptation of organisms from water to land, shedding light on the early processes of adaptation to new environments. The researchers also discovered evidence of crabs returning to fully marine life at least 2 to 3 times.

via Phys.org|

#crabs #evolution #marine-environment