Archaic baleen whale from the Kokoamu Greensand: earbones distinguish a new late Oligocene mysticete (Cetacea: Mysticeti) from New Zealand

作者：Tsai C H; Fordyce R E

来源：Journal of the Royal Society of New Zealand, 2016, 46(2): 117-138.

DOI：10.1080/03036758.2016.1156552

• Ecology
• fossil
• hearing
• morphology
• skull
• tympanoperiotic

dagger Whakakai waipata is a new genus and species of Mysticeti from the Kokoamu Greensand (Chattian, Late Oligocene, 25-27Ma) of The Earthquakes', North Otago. The holotype of dagger Whakakai waipata is a partial skull, periotics, tympanic bulla, vertebrae and scapula. The earbone morphology of dagger Whakakai waipata shows a unique combination of diagnostic features including: massive periotic; flange of posterior process and caudal tympanic process flooring stapedial muscle fossa; and an elongated stylomastoid fossa that invades the robust posterior process of the periotic. The tympanoperiotic features in dagger Whakakai waipata suggest a different acoustic niche from other Oligocene mysticetes, and by inference different feeding habits and habitat.http://zoobank.org/NomenclaturalActs/9D04EC04-1425-4631-9B96-3C279C51E928http://zoobank.org/urn:lsid:zoobank.org:act:9D04EC04-1425-4631-9B96-3C279C51E928

• 出版日期2016-6