Pikaia “confirmed” as earliest known chordate …
|March 5, 2012||Posted by O'Leary under Cambrian explosion, News|
In “Humans ‘evolved from worm creature,’” (Sydney Morning Herald, March 6, 2012), John von Radowitz reports,
Humans evolved from a five-centimetre-long worm-like creature that wriggled in the sea more than 500 million years ago, scientists have learned.
The extinct Pikaia gracilens has been confirmed as the oldest known member of the chordate family, which includes all modern vertebrates including humans.
Pikaia was fingered for this role decades ago, but now there’s more evidence.
Anyway, do see intrepid Canuck blogger Blazing Cat Fur’s unforgettable take here.