Orbitolinids And Other Larger Benthic Foraminifera From The Aptian-Albian Of Tibet: Critical Discussion Of Some Recently Published Data Author SCHLAGINTWEIT, FELIX Lerchenauerstr. 167, 80935 Munich, Germany felix.schlagintweit@gmx.de text Acta Palaeontologica Romaniae 2021 2021-09-09 18 1 17 23 http://dx.doi.org/10.35463/j.apr.2022.01.03 journal article 10.35463/j.apr.2022.01.03 1842-371x 10520845 Record of Mesorbitolina parva ( Douglass, 1960 ) ( Fig. 1A ) Referred illustrations: Mesorbitolina parva , part of figure 8 in BouDagher-Fadel et al. (2017) . Mesorbitolina parva ( Douglass, 1960 ) has been described as Orbitolina ( Columnorbitolina ) absidata by Zhang (1986) from the Langshan Formation of the Lhasa Block. Here we make reference to a tiny image of “ Mesorbitolina parva ” included in Fig. 8 of BouDagher-Fadel et al. (2017) therein showing the stratigraphic ranges and assumed phylogenetic relationships ( Fig. 1A ). The specimen is here interpreted as an axial section of Praeorbitolina cormyi perpendicular to the median plane comparable to those illustrated by Bosselini et al. (1999 , fig. 5a and 5g ) from the early Aptian of Ethiopia ( Fig. 1 B-C), or own material from Iran ( Fig. 1 D-E). It shows a subdivided subembryonic zone overlain by protoconch and deuterconch; a supraembryonic zone is seemingly lacking. The regular presence of short partitions at the top of the deuteroconch (not well discernible) would indicate Praeorbitolina claveli Schlagintweit et al. This example and the following ones give evidence that the established ranges partly include incorrect determinations too.