Bulla ossea

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As Bulla osseous (plural bullae osseae) responsible for are whales typical mergers of ear capsule of temporal bone and tympanic referred to as a bubble-shaped Knochenauftreibung ( "Hearing bubble") with the skulls themselves are only loosely connected by ligaments and embedded in connective and fatty tissue. They play a role in conducting sound in the whales' hearing .

After death, these bullae can loosen and are fossilized as cetolites . Accordingly, they are often found as isolated bone fragments.

supporting documents

  1. ↑ a b Keyword "Bulla ossea" In: Herder-Lexikon der Biologie . Spektrum Akademischer Verlag GmbH, Heidelberg 2003, ISBN 3-8274-0354-5 .
  2. ↑ Keyword “Cetoliths” In: Herder-Lexikon der Biologie . Spektrum Akademischer Verlag GmbH, Heidelberg 2003, ISBN 3-8274-0354-5 .