Sentences with phrase «mysticete from»
Earliest mysticete from the late Eocene of Peru sheds new light on the origin of baleen whales.
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«For example, this early mysticete retains teeth, and from what we observed of its skull, we think that it displays an early specialization for suction feeding and maybe for bottom feeding.»
Based on the age of nearby rocks, the scientists estimate that the Arktocara fossil comes from the late Oligocene epoch, around the time ancient whales diversified into two groups — baleen whales (mysticetes) and toothed whales (odontocetes).
Thus, when the filter - feeding mysticetes (which includes the blue whale) began scooping krill from the water, they essentially excluded other lineages from this niche.
But at some point during whale history, the ancestors of modern mysticetes replaced teeth with baleen, fibrous plates that filter out small bits of food from seawater like a giant sieve.
In September 2014, the same international team of researchers, guided by Giovanni Bianucci from Pisa University (Italy), found a partial skeleton of a mysticete whale in a rock boulder.