Pikaia Enamel Pin (Pikaia gracilens) marchei 5" plush on key chain

5" plush on key chain clip

The Gambian pouched rat is a species of rodent native to West Africa

Partial Skull on Stand Length 18

this species has two toes that face forward and two that face backwards

Pikaia Enamel Pin (Pikaia gracilens) marchei 5" plush on key chainMeet Pikaia gracilens, the humble wormlike swimmer from the Cambrian seas (~505 million years ago) that may just be one of your oldest relatives. At about 5 cm long, it didnt look like muchjust a slender, ribbon bodied creature wriggling through the Burgess Shale ecosystem. But Pikaia had something revolutionary: a notochord, the flexible rod that would eventually evolve into a backbone. That makes this little swimmer a crucial early chapter in