[go: up one dir, main page]

Diunatans: Difference between revisions

Content deleted Content added
SHFW70 (talk | contribs)
m again
better as it was. Most people don't know that rorquals are whales.
Line 16:
}}
 
'''''Diunatans''''' is an extinct [[genus]] of [[rorqual]] [[whale]]. It lived in the [[North Sea]] during the [[Early Pliocene]]. Two specimens have been found from the [[Netherlands]]. They were collected from the [[Kattendijk Formation]] in the province of [[Zeeland]], which is [[Zanclean]] in age. ''Diunatans'' is considered to be a [[stem group|stem]] [[balaenopterid]] because it falls outside the ''[[Balaenoptera]]''+''[[Megaptera]]'' [[clade]], which includes all living rorqualsrorqual whales. Its name means "long-distance swimmer", from the [[Latin]] ''diu'' meaning "long time" or "long distance", and ''natans'', meaning "swimming." The [[type species]] is ''D. luctoretemergo'', named after the motto of Zeeland, "Luctor et Emergo" (Latin for "I struggle and I emerge").<ref name=BK10>{{cite journal |last=Bosselaers |first=M. |coauthors=and Post, K. |year=2010 |title=A new fossil rorqual (Mammalia, Cetacea, Balaenopteridae) from the Early Pliocene of the North Sea, with a review of the rorqual species described by Owen and Van Beneden |journal=Geodiversitas |volume=32 |issue=2 |pages=331–363 |url=http://www.mnhn.fr/museum/front/medias/publication/27451_g10n2a6-low.pdf |doi=10.5252/g2010n2a6}}</ref>
 
''Diunatans'' was around the size of the living [[Common minke whale|minke whale]]. Several distinguishing characteristics can be seen in the skull of ''Diunatans'', including a large [[occipital condyle]] and very small [[nasal bone]]s compared to other rorquals. The [[tympanic bulla]], which encapsulates the [[middle ear]], is also large.<ref name=BK10/>