Back
Ctenis kalenmuvaensis
Ctenis kalenmuvaensis Golovn. Chaunsk. Fl. Okhot.-Chukotsk. Vulkan. Poyasa 131. 2018
- Name
- Ctenis kalenmuvaensis
- Rank
- Species
- Generic Name
- [Genus] Ctenis
- Authors (Pub.)
- Golovneva L. B.
- Publication
- Chaunskaya flora Okhotsko-Chukotskogo vulkanogennogo poyasa [2018]
- Authors (Book)
- Golovneva L. B.
- Book
- Chaunskaya flora Okhotsko-Chukotskogo vulkanogennogo poyasa
- Page number
- 131
- Year
- 2018
- Fossil Status
- foliage
- Stratigraphy
- Coniacian
- Strat. comment
- Koekvun Formation
- Location
- Palyavaam River basin, Akakagyrgyn Creek, Chukotka Autonomous District, Russian Federation
- Paleoregion
- Eurasia (Far East)
Data for Holotypus
- Repository
- North-Eastern Complex Scientific-Exploratory Institute (SVKNII DVO RAN), Far Eastern Branch, Russian Academy of Sciences, Magadan, Russian Federation
- Repository Number
- Coll. PF3, # 7
- Diagnosis
- Leaves of the unequal size, in bunches, odd-pinnate, obovate-lanceolate, up
to 10-12 cm long and 1,5-3,5 cm wide. Rachis broad in the base, gradually tapering and terminate in the apex of top segment. Top segment the largest, from lanceolate to widely ovate or rhomboid in shape, with rounded or slightly emarginated apex and widely cuneate, often asymmetrical base. Below top segment rachis bears 1-3 pairs gradually decreasing downwards,
opposite or alternate segments. Segments triangular or linguiform, asymmetrical, arising from rachis at angle 50-80°, with blunt rounded apex, attached to the rachis laterally by whole base, slightly decurrent to the rachis. Margin of segments entire. Venation parallel with occasional cross connections, ending freely near the margins.
