Scientists divide fashionable whales into two groups: those with teeth, like orcas and proper whales (Odontoceti), and those with baleen (Mysticeti). Evolutionary biologists once assumed that the 2 groups break up up when the Mysticeti developed baleen. However Fitzgerald’s examination of the fossil, which he known as Janjucetus hunderi, сократить ссылку онлайн proved that assumption fallacious. That’s because while J. hunderi clearly belongs to the Mysticeti subgroup, it would not have baleen at all. Twenty-five million years ago, this 10-foot-long (three meters) early Mysticete scoured the seas for prey to chomp on with its large, sharp teeth [source: Fitzgerald].

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