Bathysalenia granulosa (Woodward, 1856)
Members of the subfamily Saleniinae (Agassiz) (e.g. Salenia geometrica and Bathysalenia granulosus) are characterised by small tests, a fused apical disc, and a small, pronounced periproct. Bathysalenia granulosus is distinguished from Salenia geometrica by the distinctly granular appearance of the apical disc, whereas that of B. granulosus has a smooth appearance. Bathysalenia granulosus ranges from the Turonian to Campanian.
1). Isolated tests; (A) adapical and (B) adoral views (both x9, Hope Gap, Lewes Nodular Chalk Formation (Beeding Beds)). Both Randell Collection, (A) RR1523, (B) RR1525.
2). Lateral (side) view of a complete test ( x9, Hope Gap, Lewes Nodular Chalk Formation (Beeding Beds), Randell Collection, RR1523).
3). Large test resting on a fragment of inoceramid bivalve; (A) adapical and (B) lateral views (x6, Hope Gap, Lewes Nodular Chalk Formation (Beeding Beds), Randell Collection, RR1527).
4). Broken tests exposing Aristotle's Lantern elements (both Hope Gap, Lewes Nodular Chalk (Beeding Beds), Randell Collection, (A) RR1500, (B) RR0255).; (A) a significant but mainly disarticulated portion of the lantern is retained within the test (x10); (B) a solitary hemi-pyramid is seen floating in the sediment fill of the test (x13).