Pikaia Enamel Pin (Pikaia gracilens) marchei contributing to seed dispersal and

contributing to seed dispersal and maintaining the balance of plant populations

German shepherds are a popular and versatile breed of working dog

This specimen is one of the set of seven wonderfully detailed half scale models

Partial Skull on Stand Length 18

Front Horn Length 85 cm (33

Pikaia Enamel Pin (Pikaia gracilens) marchei contributing to seed dispersal andMeet 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