-
distinguished by the
presence of
conical calcareous deposits,
known as
endocones,
found in the more
apical portion of the siphuncle. They are
thought to...
-
concretions known as
endocones,
which have a
simple conical form in Cameroceras. A thin
endosiphuncular tube p****es
through the apex of each
endocone, in the lower...
- "earlier
shield horn") is a
medium to
large sized[ambiguous]
endocerid (
endocone-bearing
orthoconic nautiliod) from the
Early and
Middle Ordovician included...
-
especially in the
young but
which may be
tubular in the
adult stage.
Endocones are simple,
subcircular in
cross section, and
penetrated by a
narrow tube...
- true endocerids, the
simple endocones of
bisonocerids are
interlaced with a more
complex form of
endocone. “Complex”
endocones are imperforate,
without a...
-
include horizontal partitions (diaphragms),
stacked conical structures (
endocones),
longitudinal rods, and
various other concretions.
Endosiphuncular deposits...
- teeth. The
mesocone is the most developed, long and aculeate,
while the
endocone is
relatively short.
There is a big gap
between the
mesocone and the ectocone...
- is
concave ventrally. The
opening between the
dorsal process and the
endocone forms a
dorsally concave crescent shape. The
process is
bisected in the...
- with the
mesocone largest and two to five
minor cusps to the side of the
endocone and the ectocone. The
marginal teeth have up to ten cusps. The ovotestis...
- a
family of
endogastric discosorids (Cephalopoda, Nautiloidea), with
endocones in the siphuncle,
ranging from the
Middle Silurian to
Middle Devonian...
