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Sea worm fossil gives clues to 'common ancestor'

Edit BBC News 07 Jul 2016
Fossil discoveries of this kind are rare ... "Now we know that they were primitive hemichordates - perhaps the most primitive of all."Common ancestor. Hemichordates are a group of creatures that belong to a larger group called deuterostomes, of which vertebrates (including humans) form a separate branch ... "Hemichordates are central to our understanding of how deuterostomes evolved ... Oesia. ....

The secret to an Oesia life: Prehistoric worm built tube-like “houses” on sea floor (University of Cambridge)

Edit Public Technologies 07 Jul 2016
(Source. University of Cambridge) ... Part of its importance is that it confirms Oesia was a primitive specimen from a group of creatures called hemichordates ... 'Hemichordates are central to our understanding of how deuterostomes evolved ... Now we know that they were primitive hemichordates - perhaps the most primitive of all.' ... Dr ... The study, Cambrian suspension-feeding tubicolous hemichordates, is published in the journal BMC Biology ... (noodl....

The secret to an Oesia life: Prehistoric worm built tube-like “houses” on sea floor (ROM - Royal Ontario Museum)

Edit Public Technologies 07 Jul 2016
(Source. ROM - Royal Ontario Museum) ... Part of its importance is that it confirms Oesia was a primitive specimen from a group of creatures called hemichordates ... 'Hemichordates are central to our understanding of how deuterostomes evolved ... Now we know that they were primitive hemichordates - perhaps the most primitive of all.' ... Dr ... The study, Cambrian suspension-feeding tubicolous hemichordates, is published in the journal BMC Biology ... -30-....

Acorn worm genome reveals gill origins of human pharynx (University of California - Berkeley)

Edit Public Technologies 19 Nov 2015
The draft genome sequences of two species of acorn worm, which live in U-shaped burrows in shallow, brackish water, are the first genomes of hemichordates, which retain similarities to the first animals to evolve pharyngeal or 'gill' slits ... 'I'm interested in the origins of chordates, which, of course, came from non-chordates, and hemichordates like the acorn worm are the closest we have to this lineage,' he said....
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