Cliftonia sp. A
publication ID |
https://doi.org/ 10.4202/app.2013.0010 |
persistent identifier |
https://treatment.plazi.org/id/81298792-FFEC-A244-FCE0-FDDEFADBD4B4 |
treatment provided by |
Felipe |
scientific name |
Cliftonia sp. A |
status |
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Fig. 9G.
Material.— Seven specimens embedded in rock. Porkuni Regional Stage , Kuldiga Formation , Hirnantian ( Upper Ordovician ); western Latvia. Drill core and depth (in meters) of sample intervals with brachiopods. Collection GIT 542 View Materials : Aizpute-41, 1000.3; Mežmaļi-16, 915.6; 916.1; Sturi-8, 943.0, Priekule-20, 1363.0; Riekstini-15, 860.8–860.9, Vilcini-19, 913.5 .
Remarks.—These specimens may represent a subspecies of Cliftonia cf. psittacina . They are distinctive, being small, less than 15 mm in length, with a strongly convex dorsal valve, weakly impressed sulcus with five costae, cardinal process is grooved. These specimens occur in the lowermost part of the Porkuni Stage, commonly below the first appearance of C. psittacina (in the Stirnas-18 core in the chitinozoan Spinachitina taugourdeaui Zone ; Hints et al. 2010).
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