Rarytkinia polonica
publication ID |
https://doi.org/ 10.4202/app.2011.0024 |
persistent identifier |
https://treatment.plazi.org/id/922F3E29-5566-FFAF-FCA7-6399FF70FB48 |
treatment provided by |
Felipe (2024-08-08 21:06:42, last updated 2024-08-08 23:14:14) |
scientific name |
Rarytkinia polonica |
status |
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Rarytkinia polonica (Karczmarz and Popiel in Malicki et al., 1967) comb. nov.
Figs. 2E, 10B View Fig , 11B, D, 12J.
1907 Populus hyperborea Heer ; Nowak 1907a: 50–51, pl. 2: 17.
part 1967 Ficus polonica Kar. et Pop. , n. sp.; Malicki et al. 1967: 228–229, pls. 7: 22, 8: 23.
1975 Ficus polonica Kar. et Pop. ; Kohlman−Adamska 1975: 164, 166, pl. 1: 3.
Basionym : Ficus polonica Karczmarz and Popiel in Malicki et al., 1967.
Type material: Holotype MZ VII/33/32, an incomplete leaf from Krasnobród; paratype from Kosobudy ( Malicki et al. 1967: pl. 8: 23; MZ VII/33/30) is unidentifiable.
Material.—Four incomplete leaves: L PB−K.20 from Potylicz, JS 3, ZPAL Pl 4/1/2, 4 from Krasnobród.
Description.—Blade attachment marginal, laminar size mesophyll (length up to at least 10 cm), laminar length to width ratio 1.8:1, laminar shape elliptic, blade medially symmetric, basal width asymmetric, margin unlobed with dentate and serrate teeth. Apex not preserved, base angle obtuse, base shape convex.
http://dx.doi.org/10.4202/app.2011.0024
Primary venation pinnate craspedodromous. The first two pairs of secondaries depart under an angle of 70–90 °, whereas all the following ones keep a uniform angle of 50–60 °. Spacing of secondaries slightly decreasing distally, attachment excurrent. Secondaries sometimes bifurcate; no intersecondaries. Tertiaries poorly preserved.
Tooth spacing irregular with one order of teeth and two to three teeth per cm. Teeth low, sinus shallow. Teeth either perpendicular to the leaf margin or directed distally. Sinus shape mostly rounded, tooth shape biconcave.
Remarks.—The discussed poorly preserved leaves are included in Rarytkinia on account of their shape, serration, and venation. In particular, the lowest veins depart from the midvein at a much higher angle, wherefore they are shorter than the following ones, a character shared with the R. terechovae , the type of the genus. The differences between R. polonica and R. terechovae are difficult to define given the great variability of both species ( Golovneva and Abramova 1990) and the poor preservation of our material. However, the serration of our taxon seems much finer.
The affinities of this form genus are unknown. It is known from the Maastrichtian to Danian of the Koryak Mountains, Russian Far East: R. terechovae and R. amaamensis Moiseeva, 2008 ( Golovneva and Abramova 1990; Moiseeva 2008) and from the Palaeocene of Alaska ( Rarytkinia sp. , Early Sagwon flora; Herman et al. 2009). R. quercifolia Golovneva, 2000 from Greenland is excluded following Kvaček (2010). R. polonica is therefore the oldest and the southernmost known species of an otherwise northern genus.
Stratigraphic and geographic range.—Krasnobród, Potelych, late Campanian.
Golovneva, L. B. and Abramova, L. N. 1990. New plants of the Rarytkin (the Upper Cretaceous, the Koryak Upland) [in Russian]. Botaniceskij zurnal 75: 995 - 1000.
Herman, A. B., Akhmetiev, M. A., Kodrul, T. M., Moiseeva, M. G., and Iakovleva, A. I. 2009. Flora development in northeastern Asia and northern Alaska during the Cretaceous - Paleogene transitional epoch. Stratigraphy and Geological Correlation 17: 79 - 97.
Karczmarz, K. and Popiel, J. S. 1971. On the Upper Cretaceous floras of the Lublin Upland and Roztocze area. Kwartalnik Geologiczny 15: 643 - 650.
Kohlman-Adamska, A. 1975. The Muzeum Ziemi PAN collection of Upper Cretaceous plants from the Lublin Highland and the Roztocze Region. Prace Muzeum Ziemi 24: 163 - 167.
Malicki, A., Karczmarz, K., and Popiel, J. S. 1967. Materials for the Upper Cretaceous floras of the Lublin Upland and Roztocze. Annales Universitatis Mariae Curie-Sklodowska, Sectio B 22: 219 - 236.
Moiseeva, M. G. 2008. New angiosperms from the Maastrichtian of the Amaam Lagoon Area (Northeastern Russia). Paleontological Journal 42: 313 - 327.
Nowak, J. 1907 a. Die fossile Senonflora von Potylicz. Bulletin international de l'Academie des Sciencs de Cracovie, Classe des Sciences mathematiques et naturelles 1907 (1): 45 - 56.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
Kingdom |
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Phylum |
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Class |
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Genus |
Rarytkinia polonica
Halamski, Adam T. 2013 |
Ficus polonica
Kohlman-Adamska, A. 1975: 164 |
Populus hyperborea
Nowak, J. 1907: 50 |