dc.contributor.author
Ritsche, Indira S.
dc.contributor.author
Hampe, Oliver
dc.date.accessioned
2023-12-05T14:00:33Z
dc.date.available
2023-12-05T14:00:33Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/41739
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-41459
dc.description.abstract
Here we present two new Miocene basal balaenomorph mysticetes recognized by periotic bones with a unique combination of characters. The fossil periotics originated from former shallow marine sediments and were discovered in a suburban quarry of Bocholt in the German Münsterland holding a number of remains of a multispecies community of mysticetes. A detailed accompanying analysis of the internal and external structures of mysticete periotics resulted in a critical review and revision of two important characteristics of the pars cochlearis. The partition between the openings for the facial nerve and the vestibulocochlear nerve, named here ‘bony septum’ for baleen whales, has been developed so prominently during mysticete evolution that the crista transversa is no longer recognizable in derived forms, as it lies deep inside the inner ear canal and within the fundus of the internal acoustic meatus where it separates the cochlear nerve from the inferior vestibular nerve. We show that the designation of the opening for the superior vestibular nerve as ‘foramen singulare’ is misleading since this term describes the opening for the nerve to the posterior semicircular canal within the fundus of the internal acoustic meatus.
en
dc.format.extent
18 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Diorocetidae
en
dc.subject
Breda Formation
en
dc.subject
crista transversa
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::560 Fossilien, Paläontologie::560 Paläontologie, Paläozoologie
dc.title
Two exceptional Balaenomorpha (Cetacea: Mysticeti) from the Biemenhorst Subformation (middle/late Miocene) of Bocholt (W Münsterland, Germany) with a critical appraisal on the anatomy of the periotic bone
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
a37
dcterms.bibliographicCitation.doi
10.26879/1268
dcterms.bibliographicCitation.journaltitle
Palaeontologia Electronica
dcterms.bibliographicCitation.number
3
dcterms.bibliographicCitation.volume
26
dcterms.bibliographicCitation.url
https://doi.org/10.26879/1268
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften / Fachrichtung Paläontologie
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refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1094-8074
refubium.resourceType.provider
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