Pikaia Enamel Pin (Pikaia gracilens) marchei The Gambian pouched rat is
Description
The Gambian pouched rat is a species of rodent native to West Africa
Front Horn Length 85 cm (33
This specimen is one of the set of seven wonderfully detailed half scale models
5" plush on key chain clip
this species has two toes that face forward and two that face backwards
Pikaia Enamel Pin (Pikaia gracilens) marchei The Gambian pouched rat isMeet 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
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