| Summary: | ‘ P . primalis ’ from upper Miocene Biozone M13b at level of first appearance approximately 6.4 Ma showing transition from Neogloboquadrina acostaensis , Sample U1488A–21H–4, 79–81 cm, Eauripik Rise, western tropical Pacific Ocean. ‘ P . primalis advanced form’ from Pliocene Biozone PL2 (lower part) approximately 4.2 Ma, Sample U1488A–12H–CC, Eauripik Rise, western tropical Pacific Ocean. ‘ P . praecursor ’ from Pliocene Biozone PL2 (lower part) approximately 4.2 Ma, Sample 873B–3H–3, 10–12 cm, Wodejebato Guyot, western tropical Pacific Ocean. ‘ P . obliquiloculata ’ and ‘ P . finalis ’ from Pleistocene Biozone PT1 approximately 0.8 Ma, Sample U1483A–11H–2, 50–52 cm, off northwest Australian margin, eastern tropical Indian Ocean. ‘ P . praespectabilis ’ from Pliocene Biozone PL1 approximately 4.8 Ma, Sample 873B–3H–5, 10–12 cm, Wodejebato Guyot, western tropical Pacific Ocean. ‘ P . spectabilis ’ from Pliocene Biozone PL2 (lower part) approximately 4.2 Ma, Sample 873B–3H–3, 10–12 cm, Wodejebato Guyot, western tropical Pacific Ocean. Photographs obtained with a z-stacking light microscope.
|
|---|