- differences. All pre-Cretaceous "Spirorbis"
fossils are now
known to be
microconchids.
Their classification at the
phylum level is
still debated. Most likely...
-
brachiozoans and
annelids as
possible sister taxa. The
extinct hederelloids,
microconchids, cornulitids, and
tentaculitids were
likely lophophorates based on their...
-
occurred in
South China.
Serpulids appeared in the
Middle Tri****ic.
Microconchids were abundant. The s****ed
cephalopods called ammonites recovered, diversifying...
- to
Middle Jur****ic,
becoming prominent members of the phytoplankton.
Microconchid tube worms, the last
remaining order of Tentaculita, a
group of animals...
-
Annuliconchus is a
genus of
microconchid tubeworms.
Their tubes have
pseudopunctae penetrating the tube wall.
Tubes lumen is annulated.
Annuliconchus occurs...
- bryozoans,
diverse and
abundant brachiopods, the
enigmatic hederellids,
microconchids, and corals. Lily-like
crinoids (animals,
their resemblance to flowers...
-
periods are the
remains of an
extinct order of
lophophorates (now
called microconchids)
unrelated to
modern marine tube-worms (Annelids) to
which the genus...
-
Helicoconchus is a
microconchid genus that
occurs in the
Lower Permian of Texas. It
forms small reef-like
bodies of
tubes branching from a
common origin...
- corals, Bryozoa, Ostracoda, brachiopods, ammonoids, hederelloids,
microconchids and
echinoderms (especially crinoids).[citation needed] The diversity...
-
Punctaconchus is a
genus of
microconchid tubeworms. It was the last
genus of
microconchids, and the only
genus to
exist beyond the Tri****ic.
Their tubes...
