Plate 16

Conoglobigerina helvetojurassica (Haeusler). Scale bars for all specimens represent 50 µm; scale bars for wall texture scans 1a and 3a are 20 µm long and for wall texture scan 2a is 10 µm long. Nos. 1–4, sample 4 mid, Eisengraben Section, Birmenstorfer Schichten, Transversarius Zone, Middle Oxfordian, Canton Aargau, Switzerland. Images nos. 1a, 2a and 3a show the reticulate wall texture of specimens 1, 2 and 3. The aperture likely was arch shaped in nos. 1, 2 and 3 and clearly loop shaped with lip in no. 4. Nos. 5–9. Conoglobigerina helvetojurassica (Haeusler), Tojeira Formation, Early Kimmeridgian, Montejunto area, Portugal. Specimen no. 7 is from sample 24/2P; the specimens nos. 5, 6 and 9 are from sample T2/1 and no. 8 specimen is from sample T2/2. The Tojeira specimens have a reticulate wall (imperfectly so on some chambers in specimen nos. 6 and 8) and arched to looped aperture with lip