-
article on "
exogastric", but its
sister project Wiktionary does: Read the
Wiktionary entry "
exogastric" You can also:
Search for
Exogastric in Wikipedia...
-
generally straight to
endogastric Plectronoceratidae and the
slightly exogastric Balkoceratidae.
Members of the
Plectronocerida are
characterized as follows...
- only
permit large size to be
attained with a
straight s****,
whereas exogastric coiling –
initially rather rare –
permitted the
spirals familiar from...
- end. It
bears pronounced concentric ribbing around its
strongly coiled exogastric s****. Peel, J. S. (1991). "Functional
Morphology of the
class Helcionelloida...
-
concave (belly in);
exogastric means the s**** is
curved so as the
ventral side is
longitudinally convex (belly out).
Exogastric coiling allows the funnel...
- Ophidioceratidae. The
Tarphycerida evolved from the elongated, compressed,
exogastric B****leroceratidae,
probably B****leroceras,
around the end of the Gasconadian...
-
subventral siphuncle. The
phragmocone is
rapidly expanding and
strongly exogastric. The body
chamber is
attached at knee-like
bends on the
ventral and lateral...
-
essentially straight s****
referred to as breviconic,
typically with a
faintly exogastric shape produced by the
profile of the body chamber.
Apertures vary from...
-
small to tiny
forms with
orthoconic or
endogastric s****, a few
being exogastric, with
proportionally large ventral siphuncles that
contain numerous diaphragms...
-
included in the Archiacoceratidae, a
family characterized by compressed,
exogastric,
cyrtocones with a large, actinosiphonate,
dorsal siphuncle. The Paleobiology...
