FIGURE 3 in Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard

FIGURE 3. Solemya (Petrasma) cf. woodwardiana Leckenby, 1859. (A–B) Lateral view of right valve and dorsal view of articulated specimen with shell preserved. (C–D) Lateral view of left vavle internal mould. Note weak anterior adductor muscle scar and very weak radial ornament. (E) Lateral view of right valve internal mould with shell partially preserved. Note strong radial ornament on the shell, weak on the mould, and posterior adductor muscle scar with buttress supporting the anterior side. (F–G) Lateral view of left vavle internal mould with some shell preserved in dorsal and anterior margins. Note posterior adductor muscle scar with buttress supporting its anterior side and dorsally bound by a chondrophore and weak growth lines on the posterior shell margin. (H–I) Silicone rubber cast of an internal mould showing shape of posterior adductor muscle scar and its relation to chondrophore and buttress. Note posterior adductor muscle scar surrounding the dorsal side of chondrophore and passing above the posterior end of the chondrophore. (J–K, M) Dorsal views of articulated internal moulds showing chondrophore and anterior adductor muscle scar. (L, N) Enlarged part of the dorsal margin showing ligament demipads. (A–B) PMO 224.956, (C–D, H–L) PMO 217.249, (E) PMO 217.260, (F–G) PMO 217.176, (M–N) PMO 217.245. Scale bars 5 mm.