- The
Chaetognatha /kiːˈtɒɡnəθə/ or
chaetognaths /ˈkiːtɒɡnæθs/ (meaning bristle-jaws) are a
phylum of
predatory marine worms that are a
major component of...
-
Timorebestia koprii is an
extinct species of stem-group
chaetognath (arrow worm relative) that
lived about 520
million years ago, in the Cambrian. Its...
-
study supported a stem-
chaetognath interpretation,
suggesting that gnathiferan-like jaws were lost in the
ancestor of
chaetognaths. A 2024
study again supported...
-
Rotifers are
among the most
diverse and
abundant freshwater animals and
chaetognaths are
among the most
abundant marine plankton. In most gnathiferans, the...
-
commonly called "worms"
include annelids, nematodes, flatworms, nemerteans,
chaetognaths, priapulids, and
insect larvae such as
grubs and maggots. The term "helminth"...
- the
phylum Chaetognatha,
commonly known as
arrow worms.
Unlike most
chaetognaths,
which are
pelagic (free-swimming in open water),
species of Spadella...
-
Ankalodous is a
Cambrian genus of
chaetognath from the
Maotianshan Shales of China. It
contains one species,
Ankalodous sericus.
Ankalodous is only known...
-
though more
recent studies consider them to be more
closely related to
chaetognaths (arrow worms).
Protoconodont elements are
slender and pointed, with a...
- over 25 on each half.
These spines are
arranged in arcs like
modern chaetognaths,
although unlike the
modern types no
posterior or
anterior teeth are...
-
Caecosagitta macrocephala is a deep sea
marine chaetognath that is
distributed in meso- and
bathypelagic layers. It has a very wide
distribution that...
