- s****y plate, now
understood to be part of the body of an ammonite.
Paired aptychi have, on rare occasions, been
found at or
within the
aperture of ammonite...
-
termed the
aptychus or
aptychi in the case of a pair of plates, and
anaptychus in the case of a
single plate. The
paired aptychi were
symmetric to one...
- and extinct,
including squids, octopuses, belemnites, and vampyromorphs.
Aptychi –
paired plate-like
structures found in
ammonites – may also have been...
- s****ed cephalopods), a
calcareous structure known as the
aptychus (plural
aptychi) existed. When
these were
first described they were
thought to be valves...
-
usually not phylloid,
lobes tend to be more
jagged with thorn-like endings.
Aptychi are
single valved and
concentrically striated (Anaptychus) The Lytoceratina...
- "Paleobiology
Database - Himalayitidae".
Retrieved 2017-10-19.
Ammonites and
aptychi. LF Spath, 1925 Data
related to
Himalayitidae at
Wikispecies Media related...
-
diverse forms,
generally with
sharp ribbing and
complex suture lines.
Aptychi are
believed to be
mostly granular (Granulaptycus) or
concentrically ribbed...
-
ammonites in the
family Himalayitidae. List of
ammonite genera Ammonites and
aptychi. LF Spath, 1925 Yin, Jiarun; Enay,
Raymond (2004). "Tithonian ammonoid...
-
ammonoid jaw
apparatuses from the
Solnhofen plattenkalks:
implications for
aptychi function and
microphagous feeding of ammonoids".
Neues Jahrbuch für Geologie...
-
supported by an
aptychus (body part of an ammonite)
found within the slab;
aptychi are
almost always embedded with
their concave sides pointing upwards. However...
