-
Cyclostome is a
biological term (from the Gr**** for "round mouth") used in a few
different senses: for the
taxon Cyclostomi,
which comprises the extant...
- the
evidence provided by
Heimberg et al. and
prepared to
admit that
cyclostomes are, in fact, monophyletic. The
consequence is that they may tell us...
- with jaws (called gnathostomes) than to
cyclostomes.
Biologists historically disagreed on
whether cyclostomes are a clade. The "vertebrate hypothesis"...
-
large notochord as adults, and pouch-shaped
gills (Marspibranchii).
Cyclostomes were
regarded as
either degenerate cartilaginous fishes or primitive...
-
unanimously in
consensus of
cyclostome monophyly, with more
recent work
being directed at
shared microRNAs between cyclostomes and gnathostomes. The current...
- fish
became extinct during the Tri****ic period.
However studies of the
cyclostomes, the
jawless hagfishes and
lampreys that did survive, have
yielded little...
-
consisting of both
living (
cyclostomes) and
extinct (conodonts, anaspids, and ostracoderms,
among others).
Among recent animals,
cyclostomes are
sister to all...
-
Gonozooids act as
brood chambers for
fertilized eggs.
Almost all
modern cyclostome bryozoans have them, but they can be hard to
locate on a
colony because...
- to the
gnathostomes than to the
surviving agnathans,
known as
cyclostomes.
Cyclostomes apparently split from
other agnathans before the
evolution of dentine...
-
These fall into two
major groups,
informally called the
cyclostomes and noncyclostomes. In
cyclostome braconids, the
labrum and the
lower part of the clypeus...
