whales, or Mysticetes, split from their toothed cousins, Odontocetes, about 34 million years ago, and researchers analyzed a whale skull from around that time, recovered from Antarctica.
Current occurrence of baleen
whales in Antarctic waters.
Comparatively little of the chapter is devoted to the postcranial skeleton, but the discussion of osteological correlates of soft tissue structures (e.g., muscles, baleen
, brain) is welcome.
The Bryde's whale is the only species of baleen
whales that spends the whole year in tropical and subtropical zones.
Kaikaifilu's main prey was aristonectine plesiosaurs, long-necked marine reptiles that filter-fed much like baleen
Whales evolved from wolf-like land ancestors more than 50 million years ago, only later splitting into the two groups seen today: toothed whales and baleen
whales, which feed by straining small marine organisms out of the seawater.
The Egyptian foreign minister arrived in Baghdad today on a visit during which he met Prime Minister Haider al-Abadi and discussed with him issues of mutual interest between the baleen
The baskets made by Alaska Natives are commonly constructed of birchbark or cedar, beach grass, dried grass, spruce or willow root and baleen
. Examples of this are baleen
baskets, which are native to the northern coastal whaling villages, birchbark baskets created by the interior Athabaskan peoples and the grass baskets generally made in coastal and riverside villages where beach grass abounds.
ISLAMABAD -- Using computer simulation of a fin whale head, scientists have discovered that the skulls of at least some baleen
whales have acoustic properties that capture the energy of low frequencies and direct it to their ear bones.
Paradoxically, this gigantic baleen
whale is an extreme specialist, feeding almost exclusively on two species of tiny krill (small, shrimp-like marine animals about 5 centimetres long and weighing about 2 grams!).
It lived at a time of global warmth, in shallow seas around Zealandia , the continental fragment that New Zealand rests upon, along with ancient penguins and baleen
Minke whales and other Mysticeti whale species grow baleen
instead of teeth.