- of
certain ammonite s**** of the same species, the
larger s**** (the
macroconch)
being female, and the
smaller s**** (the microconch)
being male. This...
- whorl. Like many ammonites,
Stephanoceras is
dimorphic with a large,
macroconch, form
thought to be
female and a small, microconch, form
thought to be...
-
itself was a
fully grown individual with a
macroconch s****. The
second possible example was
another adult macroconch of
Ceratites from the
Muschelkalk of Germany...
- into
prominent and
moderately sharp secondary ribs. The
aperture of the
macroconch has a
broad ventral collar preceded by a constriction. That of the microconch...
-
macroconchs.
Microconch and
macroconch variations,
presumed male and
female respectively, also
differ in
their apertures. The
aperture of
macroconch Duashnoceras...
- s****
containing the ****tive eggs was a
fully grown individual with a
macroconch s****. 1969
Paleontologist A. H. Müller made the
second plausible scientific...
-
sloping sides. The
aperture is circular. The
fossils come in two sizes, the
macroconch (female)
ranging in size from 95 to 175
millimetres (3.7 to 6.9 in) in...
-
dimorphism in
their size.
While microconchs reach 16–62 mm in diameter,
macroconchs s****
width is 85–200 mm. They are
moderately involute,
compressed and...
- (Eodactylites) has
probably evolved from this genus.
Aveyroniceras is a name for
macroconchs of this genus.
Their fossils were
found in Europe,
northern Africa, Asia...
-
belonging to this
genus were
probably microconchs of Catacoeloceras. As
macroconch of M.
mucronatus is
considered to be
Catacoeloceras raquinianum. Ammonites...
