-
immensely when feeding.
These "pleated
throat grooves"
distinguish balaenopterids from
other whales.
Rorquals are
slender and
streamlined in shape, compared...
- from Montezago; it
probably represents a distinct,
unnamed genus of
balaenopterid. †Balaenoptera davidsonii, like B. cephalus, was
originally classified...
-
pressure increases.
Mysticetes consist of four families:
rorquals (
balaenopterids), cetotheriids,
right whales (balaenids), and grey
whales (eschrichtiids)...
- Y. Tajima, K. Arai, A.
Umetani & N.
Kurihara (2006). "Middle
sized balaenopterid whale specimens (Cetacea: Balaenopteridae)
preserved at
several institutions...
- but is now
recognized as more
primitive than any
extant or
fossil balaenopterid and thus in need of a new
generic name. The
holotype of this species...
-
Pliocene deposits in Belgium.
Fragilicetus exhibits a
combination of
balaenopterid features (shape of the
supraorbital process of the
frontal and significant...
-
longitudinal pleats or
grooves on the
anterior half of
their ventral surface.
Balaenopterids diverged from the
other families of
suborder Mysticeti, also called...
- seawater. Grey
whales feed on bottom-dwelling mollusks.
Rorqual family (
balaenopterids) use
throat pleats to
expand their mouths to take in food and sieve...
-
particularly the
relative quantities of
muscle and
blubber tissues.
Balaenopterid whales have a
higher proportion of
muscle tissue and tend to be negatively...
- by
which baleen is used
differs among species (gulp-feeding
within balaenopterids, skim-feeding
within balaenids, and
bottom plowing within eschrichtiids)...
