-
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...
- 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...
- Cyclostomatida, or
cyclostomata (also
known as
cyclostomes), are an
ancient order of
stenolaemate bryozoans which first appeared in the
Lower Ordovician...
-
large notochord as adults, and pouch-shaped
gills (Marspibranchii).
Cyclostomes were
regarded as
either degenerate cartilaginous fishes or primitive...
-
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...
-
characterized by the lack of jaws. The
group consists of both
living (
cyclostomes such as
hagfishes and lampreys) and
extinct clades (e.g.
conodonts and...
- the
intervertebral discs. In
other taxa, such as
chondrichthyans and
cyclostomes, it
constitutes a much
greater proportion of the skeleton. It is not...
-
unanimously in
consensus of
cyclostome monophyly, with more
recent work
being directed at
shared microRNAs between cyclostomes and gnathostomes. The current...
-
These fall into two
major groups,
informally called the
cyclostomes and noncyclostomes. In
cyclostome braconids, the
labrum and the
lower part of the clypeus...
