Nautilus praepompilius: Difference between revisions
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'''''Nautilus praepompilius''''' is an [[extinction|extinct]] species of [[nautilus]]. It lived during the late [[Eocene]] and [[Oligocene]] [[epoch]]s. Fossil specimens have been uncovered from the [[Chegan Formation]] of [[Kazakhstan]]. ''N. praepompilius'' has been grouped into a single [[taxon]] together with extant species based on their shared shell characters. It is morphologically closest to ''[[Chambered Nautilus|N. pompilius]]'', hence the name. The nepionic constriction shows that the hatching size was approximately 23 mm, close to that for ''N. pompilius'' (around 26 mm). |
'''''Nautilus praepompilius''''' is an [[extinction|extinct]] species of [[nautilus]]. It lived during the late [[Eocene]] and [[Oligocene]] [[epoch]]s. [[Fossil]] specimens have been uncovered from the [[Chegan Formation]] of [[Kazakhstan]]. ''N. praepompilius'' has been grouped into a single [[taxon]] together with extant species based on their shared shell characters. It is morphologically closest to ''[[Chambered Nautilus|N. pompilius]]'', hence the name. The nepionic constriction shows that the hatching size was approximately 23 mm, close to that for ''N. pompilius'' (around 26 mm). |
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==References== |
==References== |
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Revision as of 09:55, 27 June 2006
| Nautilus cookanum | |
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| Species: | N. praepompilius
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| †Nautilus praepompilius Shimansky, 1957
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Nautilus praepompilius is an extinct species of nautilus. It lived during the late Eocene and Oligocene epochs. Fossil specimens have been uncovered from the Chegan Formation of Kazakhstan. N. praepompilius has been grouped into a single taxon together with extant species based on their shared shell characters. It is morphologically closest to N. pompilius, hence the name. The nepionic constriction shows that the hatching size was approximately 23 mm, close to that for N. pompilius (around 26 mm).
References
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