Frullania baerlocheri Heinrichs, M.E.Reiner, K.Feldberg, von Konrat, Hentschel, Vana & A.R.Schmidt

Feldberg, Kathrin, Schaefer-Verwimp, Alfons, Li, Ya & Renner, Matt A. M., 2022, Extending the diversity of the bryoflora in Kachin amber (Myanmar), with the description of Radula patrickmuelleri, sp. nov. and R. tanaiensis, sp. nov. (Jungermanniopsida, Porellales, Radulaceae), Fossil Record 25 (1), pp. 213-230 : 213

Frullania baerlocheri Heinrichs, M.E.Reiner, K.Feldberg, von Konrat, Hentschel, Vana & A.R.Schmidt

Frullania baerlocheri Heinrichs, M.E.Reiner, K.Feldberg, von Konrat, Hentschel, Váňa & A. R. Schmidt; in Review of Palaeobotany and Palynology 169: 26, plate IV, figs 2, 3. 2012.

Frullania pinnata = Frullania pinnata Heinrichs, K.Feldberg, Schäf.-Verw. & M.Krings; in Cretaceous Research 78: 57, figs 1-3. 2017.-Holotype: GZG.BST.21963, Geoscience Centre (GZG) at the University of Göttingen, Germany; syn. fide Li et al., 2021a.

Holotype.

AMNH Bu-FB 1 g, Amber collection of the Division of Invertebrate Zoology of the American Museum of Natural History, New York, USA.

Additional specimens investigated.

SNSB-BSPG 2021 XII 1 ( Müller BuB1874; syninclusion Protofrullania cornigera ), Bavarian State Collection for Palaeontology and Geology, Munich, Germany; GZG.BST.22015 ( Müller BuB3538), GZG.BST.22039 ( Müller BuB4220; with gynoecia), Geoscience Centre (GZG) at the University of Göttingen, Germany; PB22712, PB23288 (with gynoecia), Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences; BuB3681, BuB3682, Patrick Müller Amber Collection; ZMNH155044a (syninclusion Radula heinrichsii ), ZMNH155047b, c (syninclusion Frullania kachinensis ), Zhejiang Museum of Natural History, China.

Locality and horizon.

Amber mines southwest of the village of Tanai ca. 105 km north of Myitkyina in Kachin State, northern Myanmar, fossil enclosed in upper Albian-lower Cenomanian Kachin amber.

Remarks.

The new fossil specimen is in good accordance with the type as well as subsequently described material and represents the third fertile specimen (Suppl. material 1: Fig. S2A-E; compare descriptions in Heinrichs et al. 2012, 2017b; Feldberg et al. 2021b; Li et al. 2021a). Two unfertilized gynoecia are situated on short side branches similar to specimen PB23288 ( Li et al. 2021a), but they are less far developed and most characters are obscured (Suppl. material 1: Fig. S2A, C). A subinvolucral lateral leaf with an explanate lobule is well visible (Suppl. material 1: Fig. S2D, indicated by black arrow), whereas the bracteoles and bracts are concealed for the largest part. The typical acute lobe tip can be seen on one bract (Suppl. material 1: Fig. S2E, indicated by white arrow).