''Histiodella'' is an extinct genus of
conodont
Conodonts, are an extinct group of marine jawless vertebrates belonging to the class Conodonta (from Ancient Greek κῶνος (''kōnos''), meaning " cone", and ὀδούς (''odoús''), meaning "tooth"). They are primarily known from their hard ...
s.
''Histiodella wuhaiensis'' is from the Ordovician of the
Lower Klimoli Formation in China.
[Ordovician conodonts from Dashimen, Wuhai in Inner Mongolia and the significance of the discovery of the Histiodella fauna. Zhihao Wang, Stig Bergström, Yongyi Zhen, Yuandong Zhang; Rongchang Wu and Qing Chen, Acta Micropalaeontologica Sinica, 2013, volume 30, issue 4, pages 323–343]
''Histiodella kristinae'' forms a conodont zone, in the
Table Cove Formation, Table Point, "Middle Table Head" and Table Cove, in the Middle Ordovician of Newfoundland, Canada where the trilobite species ''
Lonchodomas clavulus'' or ''
Galbagnostus galba'' are also present.
Use in stratigraphy
The base of the
Darriwilian
The Darriwilian is the upper stage of the Middle Ordovician. It is preceded by the Dapingian and succeeded by the Upper Ordovician Sandbian Stage. The lower boundary of the Darriwilian is defined as the first appearance of the graptolite species ' ...
, the fourth stage of the Ordovician, lies in the upper part of the North American ''Histiodella altifrons'' conodont zone.
References
External links
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Conodont genera
Ordovician conodonts
Paleozoic life of the Northwest Territories
{{conodont-stub