-
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...
-
consisting of both
living (
cyclostomes) and
extinct (conodonts, anaspids, and ostracoderms,
among others).
Among recent animals,
cyclostomes are
sister to all...
- with jaws (called gnathostomes) than to
cyclostomes.
Biologists historically disagreed on
whether cyclostomes are a clade. The "vertebrate hypothesis"...
- 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...
-
large notochord as adults, and pouch-shaped
gills (Marspibranchii).
Cyclostomes were
regarded as
either degenerate cartilaginous fishes or primitive...
- fish
became extinct during the Tri****ic period.
However studies of the
cyclostomes, the
jawless hagfishes and
lampreys that did survive, have
yielded little...
- to the
gnathostomes than to the
surviving agnathans,
known as
cyclostomes.
Cyclostomes apparently split from
other agnathans before the
evolution of dentine...
-
unanimously in
consensus of
cyclostome monophyly, with more
recent work
being directed at
shared microRNAs between cyclostomes and gnathostomes. The current...
- hypothalamus. The
optic chiasm is
found in all vertebrates,
although in
cyclostomes (lampreys and hagfishes), it is
located within the brain. This article...
- Sugahara, F.; Pascual-Anaya, J.; et al. (2019). "Inner ear
development in
cyclostomes and
evolution of the
vertebrate semicircular canals". Nature. 565 (7739):...
