UTRECHT MICROPALEONTOLOGICAL BUllETINS

Figs. 1-6 Drepanoistodus acuminatus (PANDER). Figs. 1a and 1b, the oistodiform element,
section 14, sample 1, X 65, CH 1144-13. Figs. 2a and 2b, the oistodiform element,
section 14, sample 1, X 65, CH 1144-14. Figs. 3a and 3b, the subetectiform element,
section 14, sample 1, X 65, CH 1144-15. Fig. 4, the dtepanodiform element, section 14,
sample 1, X 65, CH 1144-16. Fig. 5, the scandodifotm element, section 14, sample 1, X
100, CH 1144-17. Fig. 6, the acodiform element, section 14, sample 1, X 65, CH
1144-18.
Figs.7-13 Drepanoistodus inaequalis (PANDER). Fig. 7, the oistodifotm element, section 14,
sample 1, X 65, CH 1147-13. Fig. 8, the suberectiform element, section 14, sample 1, X
150, CH 1147-14. Fig. 9, the drepanodiform element, section 1, sample 6, X 65, CH
1147-15. Fig. 10, the drepanodiform element, section 14, sample 1, X 65, CH 1147-
16. Fig. 11, the scandodiform element, section 14, sample 1, X 65, CH 1147-17. Fig.
12, the scandodiform element, chart II, sample 1, X 32, CH 1147-18. Fig. 13, the
acodiform element, section 14, sample 1, X 65, CH 1147-19.
Figs. 14-22 Drepanoistodus forceps (LINDSTROM). Fig. 14, the oistodiform element, section 14,
sample 13, X 65, CH 1146-13. Fig. 15, the suberectiform element, section 1, sample 25,
X 65, CH 1146-14. Fig. 16, the suberectiform element, section 1, sample 22, X 65, CH
1146-15. Fig. 17, the drepanodiform element (planus-type), section 6, sample 20, X 65,
CH 1146-16. Fig. 18, the drepanodiform element (homocurvatus-type), section 6,
sample 20, X 32, CH 1146-17. Fig. 19, the drepanodiform element (planus-homocurvatus
intermediate type), section 1, sample 25, X 32, CH 1146-18. Fig. 20, the scandodiform
element, section 6, sample 20, X 65, CH 1146-19. Fig. 21, the scandodiform
element, section 6, sample 20, X 65, CH 1146-20. Figs. 22a and 22b, the acodiform
element, section 14, sample 10, X 65, CH 1146-21.
Fig. 23 Pravognathus aengensis LINDSTROM. Chart II, sample 1, X 100, CH 1158-13.