## 2 Materials and Methods
White scale bar = 100 \(\mu\)m.  
Figure 9: Trochospiral planktonic foraminifera from the Zhangguo section of Rilang, Cyangze County, southern Tibet of China. (**1**) _Globtruncana neotricarinata_ (110); (**2**) _Rugotruncan_ cf. _subpennyi_ (110); (**3–10**) _Globtruncana ventricosa_ ((**3–9**) 110; (**10**) 109); (**11–15**) _Globtruncana area_ (**11–13**. 110; **14**, **15**. 112); (16–19, 21–23) Genus and species undetermined (16–19. 110; 21–23. 112); (**20**) _Globtruncana lineiana_ (110); (**24–28**) _Globtruncana laplacerni_ (**24**, **25**. 110; (**26–28**. 112); (**29**, **30**) _Archaeoglobigerina blowi_ (112). White scale bar = 100 \(\mu\)m.  
Figure 10: Benthic foraminifera from the Zhangguo section of Rilang, Gyangze County, southern Tibet of China. (**1**) _Orbitolina_ sp. (103); **(2–4)**_Textularia_ sp. (103; 110; 110); **(5)**_Guttulina_ sp. d’Orbigny, 1839 (112); **(6–8)**_Lenticulina_?_ sp. (110); **(9–12)** Benthic foraminifers (110); **(13)**_Globortalites_ sp. (110); **(14)**_Miliammina_ sp. (110); **(15–19)** Benthic foraminifers (112); **(20)**_Frondicularis_?_ sp. (112); **(21)**_Planulina_ sp. (115); **(22)**_Neofabellina_ sp. (112); **(23)**_Cibicides subtilis_ (112); **(24)**_Pyrulinooides acuminata_ (112); **(25)**_Rhapylionina_ sp. (112); **(26)**_Anmobacillus_ sp. (112); **(27)**_Anmobacillus_ kuzgongsuensis_ (110); **(28)**_Esculptina_ cf. _jacobi_ (115); **(29, 30)**_Lenticulina_ sp. (115); **(31)**_Pyrulina_?_ sp. (110); **(32)**Ostricoda (112). White scale bar = 100 \(\upmu\)m.  
Figure 11: Photomicrographs showing the microfacies from the Upper Cretaceous Chuangde Formation in the Zhangguo section of Gyangze (**A**–**O**,**R**), the Dada section of Kangmar (**P**), the Lari section of Zhongba (**Q**), and the Gyabukeqin (**S**) and Gulupu (**T**) sections of Yadong. (**A**) Peloidal marlstone (MF 1; Sample No: S90). Small, subrounded, and subangular micritic grains. Poor sorting and distinct differences in size and shape indicate that these grains originated from the reworking of weakly lithified carbonate mud. The bright spot is portion of foraminiferal fossil. (**B**) Foraminiferal grainstone (MF6; S112). (**C**) Bioclastic wackestone with _Heterobelix carinata_ (Hc) (MF3; S115). (**D**) Bioclastic wackestone with a few planktic foraminifera (Pf) (MF3; S95). (**E**) Loosely packed wackestone with planktic foraminifera (Pf) (MF4; S85). (**F**) Loosely packed wackestone with planktic foraminifera (Pf) and sponge spicule (Ss) (MF4; S99). (**G**) Planktic foraminiferal packstone with _Globotruncanita atlantic_ (Ga) (MF5; S110). (**H**) Bioclastic wackestone (MF3; S42) with planktic foraminifera (Pf) and calcite vein (Cv). (**I**) Grainstone (MF6; S45) with planktic foraminifera (Pf) and sponge spicule (Ss), displaying “pane fabric”. (**J**) Planktic foraminiferal packstone (MF5; S88) with planktic foraminifera (Pf) and Sponge spicule (Ss). (**K**) Grainstone (MF6; S37) with planktic foraminifera (Pf) and calcite veins (Cv). (**L**) Bioclastic packstone (MF5; S55) with planktic foraminifera (Pf). (**M**) Laminated packed wackestone (MF2; S53) with planktic foraminifera (Pf). (**N**) Laminated packed wackestone (MF2; S91) with planktic foraminifera (Pf). (**O**) Grainstone (MF6; S55) with planktic foraminifera (Pf) and calcite vein (Cv). (**P**) Radiolaria-bearing chert (MF7; 06 DBw059-1; Kangmar) with some radiolarians (“R”). (**Q**) Radiolarian siliceous rock (MF8; LR-C1; Zhongba) with abundant radiolarians (“R”). (**R**) Lithoclastic wackestone/floatstone (MP; S104) with floats (Fl): Lithoclasts (floats) constitute over 60%, pressure solution stylolites (indicated by arrows) are clustered around the lithoclasts (floats) and are embedded within a micritic matrix. (**S**) Packstone with planktic (Pl) and benthic (Bt) foraminifera and calpionellids (“C”) (MF5; K\({}_{2}\)g110, Yadong). (**T**) Grainstone with benthic foraminifera (Bt) (MF6; YR5, Yadong). Scale bars represent 200 \(\upmu\)m unless noted otherwise.