FIGURE S1. Selected calcareous nannoplankton fossils identified in the uppermost part of the Bozeș Formation at Petrești. A, Arkhangelskiella cymbiformis (Vekshina, 1959) (LV5). B, Broinsonia parca constricta (Hattner et al., 1980) (LV5). C, Broinsonia parca parca ((Stradner, 1963) Bukry, 1969) (LV5). D, Chiastozygus amphipons ((Bramlette and Martini, 1964) Gartner, 1968) (LV1). E, Chiastozygus bifarius (Bukry, 1969) (LV5). F, Eiffellithus eximius ((Stover, 1966) Perch-Nielsen, 1968) (LV2). G, Eiffellithus gorkae (Reinhardt, 1965) (LV5). H, Helicolithus trabeculatus ((Górka, 1957) Verbeek, 1977) (LV4). I, Micula staurophora ((Gardet, 1955) Stradner, 1963) (LV1). J, Prediscosphaera cretacea (Arkhangelsky, 1912) Gartner, 1968 (LV1). K, Reinhardtites anthophorus (Deflandre, 1959) Perch-Nielsen, 1968 (LV2). L, Retecapsa crenulata (Bramlette & Martini, 1964) Grün in Grün and Allemann, 1975 (LV1). M, Russellia laswellii (Risatti, 1973) (LV5). N, Tranolithus orionatus ((Reinhardt, 1966a) Reinhardt, 1966b) (LV1). O, Watznaueria barnesiae (Black in Black and Barnes, 1959) Perch-Nielsen, 1968 (LV1).
FIGURE S2. Measurements of the ornamentation of fish hemintrichs and scales and assignment of the Petrești lepisosteid samples. A-F, close-ups of the ganoine surfaces of specimens NHMS 57484/LV2, 57485/LV2, and 57486/LV2. G, example of measurements of tubercle diameters and the inter-tubercular distances on ganoine on NHMS 57484. H, assignment of the Petrești samples to Lepisosteus cross-referenced with previous studies (Gayet and Meunier, 2001; Gayet et al., 2002; Blanco et al., 2017; Szabó and Ősi, 2017; Ősi et al., 2021).
