Annals of the South African MuseumAnnale van die Suid-Afrikaanse Museum . taxonomy is to reflect phylogeny, currentperceptions of the genus are too broad and this taxon requires further phylo-genetic subdivision. Trigonia tatei Neumayr, 1882Fig. 3 Trigonia cassiope dOrbigny. Tate, 1867: 158. Lycett, 1877: 172. Trigonia tatei Neumayr {in Holub & Neumayr), 1881: 275, pi. 2 (fig. 3). Kitchin, 1908: , 1944: 371. non Trigonia (Trigonia) aff. tatei Neumayr. Rennie, 1947: 58, pi. 2 (figs 11-13) (= Trigo-nia sp.). Type By lectotype designation herein, the original of the specimen figured by
Annals of the South African MuseumAnnale van die Suid-Afrikaanse Museum . taxonomy is to reflect phylogeny, currentperceptions of the genus are too broad and this taxon requires further phylo-genetic subdivision. Trigonia tatei Neumayr, 1882Fig. 3 Trigonia cassiope dOrbigny. Tate, 1867: 158. Lycett, 1877: 172. Trigonia tatei Neumayr {in Holub & Neumayr), 1881: 275, pi. 2 (fig. 3). Kitchin, 1908: , 1944: 371. non Trigonia (Trigonia) aff. tatei Neumayr. Rennie, 1947: 58, pi. 2 (figs 11-13) (= Trigo-nia sp.). Type By lectotype designation herein, the original of the specimen figured byNeumayr {in Holub & Neumayr 1881, pi. 2 (fig. 3)). Material A total of 22 specimens were examined: SAM-4646, D1876 (2 specimens),D1881-82, D1893 (9 specimens), D1896, D1932 and D1973 (2 specimens), aswell as 4 unnumbered specimens also in the South African Museum collections. Description Shell medium sized (maximum length about 70 mm), trigonally ovate,elongate (H/L = 0,71-0,73), with moderately elevated umbones situated about ANNALS OF THE SOUTH AFRICAN MUSEUM.
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Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
