2. GNATHOSTOMULIDGNATHOSTOMULID
AA•Comes from two Greek
root word: Gnathos-
Jaw and Stoma-Mouth.
Which means the
reference is jaw like
structure in the pharynx.
•Common name is "jaw
worm" or sometimes,
"sand worm,"
3. GENERAL DESCRIPTIONGENERAL DESCRIPTION
Wormlike animals
Measure 0.5 to 1 millimeters in length
They are slender to thread like worms, with a
transparent body
Some have a distinct head, trunk and tail phylum
characterized by distinctive forceps-like jaws.
Acoelomate Bilateral Animals
They have mouth but no anus
4. The gnathostomulid
body can be
divided into a head
and a trunk, and in
some cases a small
offset tail.They can
endure low oxygen
9. HABITATHABITAT
Jaw worms are found worldwide
but the best studied areas are
Western Europe, Mediterranean
sea and the Pacific Ocean.
They live in interstitial spaces of
very fine coastal sediment and silt
from intertidal to depths of
several hundred meters
They are found in medium or
fined grained sand or from sea
grass beds.