- mandibles–are
covered with a thin
keratinized layer of
epidermis known as the
rhamphotheca. In most species, two
holes called nares lead to the
respiratory system...
-
outer layer – the
rhamphotheca –
grows in size and
turns bright yellow with a dark
orange tip. The size and
color of the
rhamphotheca helps to attract...
- Spinosaurus, Halszkaraptor, Plesiosaurus), and taxa that
developed a
rhamphotheca (e.g., Caenagnathasia),
while the
network of
canals in Tyrannosaurus...
-
Skull without the
rhamphotheca...
- the
volume which is a
cellular solid. The
exterior layer,
known as the
rhamphotheca, is
composed of
several layers of
overlapping sheets of beta keratin...
- it on wood. The beak
consists of
three layers; an
outer sheath called rhamphotheca, made of
scales formed from
keratin proteins, an
inner layer of bone...
-
grooves in the
horny covering of the bill. This
covering is
called the
rhamphotheca. The
paleognath pattern has one
central strip of horn, with long, triangular...
- skull.
Oviraptor had
toothless jaws that
ended in a robust, parrot-like
rhamphotheca (horny beak). The
curvature of the
dentary tip was down-turned but less...
-
support of
Odontoanserae as both
groups have "soft
rhamphotheca, or dela****
hardening of the
rhamphotheca." In
addition to
Pelagornithidae and Anseriformes...
- horn-like
extension of the beak (the
anatomic term for this
extension is the
rhamphotheca). This horn is only
present in
breeding adults, and like the elaborate...
