Scanning electron microscope images (REM; from left to right): Stradnerlithus geometricus, Truncatoscaphus pauciramosus; Holococcolith (all images: Valanginium/Hauterivium boundary interval, Lower Saxony Basin)
Scanning electron microscope images (REM; from left to right): Stradnerlithus geometricus, Truncatoscaphus pauciramosus; Holococcolith (all images: Valanginium/Hauterivium boundary interval, Lower Saxony Basin)
Source: BGR