-
cephalopod affinity,
whereas the s**** microstructure,
notably the
presence of
punctae,
points to a
brachiopod relationship.
Subclasses Chonioconarida Orders...
-
perforation with a
sieve present on the
surface of diatom)
Striae (pores,
punctae,
spots or dots in a line on the surface)
Raphe (slit in the valves) Central...
- world. They have
lamellar calcitic s****,
usually with
pseudopunctae or
punctae and a bulb-like origin. Many were long
misidentified as the polychaete...
- only
genus to
exist beyond the Tri****ic.
Their tubes have
large pores (
punctae)
penetrating the tube wall.
Tubes lumen is
covered by ripplemarkālike transverse...
- the
outside only
adorned by
growth lines. On the
inside it has pits (or
punctae) that
branch into four or five
canals further to the outside. More recent...
- whitish, purse-shaped s**** with
relatively large, wide-spaced pits (or
punctae). It
lives attached to
stones or s**** (fragments) in
between large grains...
-
Terebratulida are
basically smooth. Most have s****
without perforations known as
punctae and are
impunctate but some e.g.
Orthida and
Rhynchonellida have punctate...
- The
dorsal valve contains many
pores (or
punctae) in
radial rows with tiny
ridges between them.
These punctae entirely perforate the s****, and
split in...
- may be
smooth or
decorated with
various features, such as
striations or
punctae. The cell wall is transparent, but with age it may
become dark
brown due...
- the hair and skin,
missing or
abnormal teeth,
enamel hypoplasia,
absent punctae in the
lower eyelids, photophobia,
occasional cognitive impairment and...
