Here you will find one or more explanations in English for the word Placoid.
Also in the bottom left of the page several parts of wikipedia pages related to the word Placoid and, of course, Placoid synonyms and on the right images related to the word Placoid.
Placoid
Placoid Plac"oid, a. [Gr. ?, ?, a tablet + -oid.] (Zo["o]l.)
Platelike; having irregular, platelike, bony scales, often
bearing spines; pertaining to the placoids.
Placoid
Placoid Plac"oid, n. (Zo["o]l.)
(a) Any fish having placoid scales, as the sharks.
(b) One of the Placoides.
Meaning of Placoid from wikipedia
-
sturgeons and gars.
Cartilaginous fishes (sharks and rays) are
covered with
placoid scales. Some
species are
covered instead by scutes, and
others have no...
-
Chondrichthyes are
aquatic vertebrates with
paired fins,
paired nares,
placoid scales,
conus arteriosus in the heart, and a lack of
opercula and swim...
- development.
Ganoid scales on a
carboniferous fish
Amblypterus striatus Placoid scales on a
lemon shark (Negaprion brevirostris)
Cycloid scales on a common...
-
Acute posterior multifocal placoid pigment epitheliopathy (APMPPE) is an
acquired inflammatory uveitis that
belongs to the
heterogenous group of white...
-
gills so they can
breathe without having to swim. Bony fish do not have
placoid scales like
cartilaginous fish,
instead they
consist of
three types of...
-
slits opening individually to the exterior,
rigid dorsal fins and
small placoid scales on the skin. The
teeth are in
several series; the
upper jaw is not...
-
turbulence while swimming.
Unlike the
scales of bony fish,
sharks have
placoid scales,
known as denticles.
Denticles are V-shaped and are made of layers...
- jaw to have high
mobility and
protrude outward. The
teeth are
modified placoid scales that are
regularly shed and replaced. In general, the
teeth have...
-
colleagues reported the ****ociated set of
megalodon remains found with
placoid scales,
which are 0.3 to 0.8
millimetres (0.012 to 0.031 in) in maximum...
-
portion of the skate's
dorsal body is
covered by
rough skin made of
placoid scales.
Placoid scales have a
pointed tip that is
oriented caudally and are homologous...
