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Pikaia gracilens is an extinct,
primitive chordate animal known from the
Middle Cambrian Burgess Shale of
British Columbia.
Described in 1911 by Charles...
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Pikaia! (ピカイア!) is a ****anese
educational anime series produced by NHK Educational. The
first season started airing on
April 29, 2015 for 13
episodes before...
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gnathostomatans a
little more confusing, as it was
roughly contemporary with
Pikaia. As
Pikaia did not have gill bars,
unlike Branchiostoma,
there are two possible...
-
between 538 and 485
million years ago. The
first Cambrian chordate known is
Pikaia gracilens, a lancelet-like
animal from the
Burgess Shale in
British Columbia...
- and Myllokunmingia, also from the
Chengjiang fauna, are
regarded as fish.
Pikaia,
discovered much
earlier but from the Mid
Cambrian Burgess Shale, is also...
- and Myllokunmingia, also from the
Chengjiang fauna, are
regarded as fish.
Pikaia,
discovered much
earlier (1911) but from the Mid
Cambrian Burgess Shale...
-
neurocranium for
elevation during suction feeding.
Published information on
Pikaia gracilens (a well-known
Cambrian era fossil)
explains evolution of swimming...
- Africa. It is
known from a single, 11 mm long
specimen found in
black shale.
Pikaia Cathaymyrus Oelofsen, B. W., and J. C. Loock. "A
FOSSIL CEPHALOCHORDATE...
- be
invertebrate forerunners of the true
vertebrates — proto-chordates.
Pikaia has been
heavily promoted as the
oldest fossil protochordate."
Richard Dawkins...
- the
ancestor of the fishes, or was
probably closely related to it, was
Pikaia. It had a
primitive notochord, a
structure that
could have
developed into...
