Figure 2. A–H in Systematic taxonomy of middle Miocene Sphaeroidinellopsis (planktonic foraminifera)

Figure 2. A–H, Dentoglobigerina altispira; A, NHMUK PM PF 75178; B, NHMUK PM PF 75179, umbilical view from sample 159/959B 17H-6 (87–89 cm), Zone M10 middle Miocene, east equatorial Atlantic; Dentoglobigerina venezuelana: C, NHMUK PM PF 75180; D, NHMUK PM PF 75181, from sample 159/959B 17H-6 (36–38 cm), Zone M10 middle Miocene, east equatorial Atlantic; Globigerinoides cf. altiaperturus: E, NHMUK PM PF 75182; F, G, NHMUK PM PF 75183, umbilical, spiral views and wall detail on 50 × 50 Mm, from sample 154/925A 4R-2 (65–67 cm), Zone M7 middle Miocene, western equatorial Atlantic; Globoquadrina dehiscens: H, NHMUK PM PF 75184, umbilical view, from sample 154/925A 4R-2 (65–67 cm), Zone M7 middle Miocene, western equatorial Atlantic; Clavatorella bermudezi: J, NHMUK PM PF 75185; K, NHMUK PM PF 75186; L, M, NHMUK PM PF 75187; N, NHMUK PM PF 75188, umbilical, edge and spiral views, and wall detail; from sample 154/925A 4R-2 (65–67 cm), Zone M7 middle Miocene, western equatorial Atlantic; Sphaeroidinellopsis disjuncta–Sphaeroidinellopsis kochi: O, NHMUK PM PF 75189, transitional specimen umbilical view from sample 154/925A 4R-2 (65–67 cm), Zone M7 middle Miocene, western equatorial Atlantic; Sphaeroidinellopsis kochi: P, NHMUK PM PF 75190, umbilical view from sample 154/925A 4R-2 (65–67 cm), Zone M7 middle Miocene, western equatorial Atlantic; Orbulina suturalis: Q, NHMUK PM PF 75191, from sample 159/959B 17H-6 (87–89 cm), Zone M10 middle Miocene, east equatorial Atlantic. Scale bars: A–F, H–L, N–Q = 100 Mm; G, M = 10 Mm.