Fig. 7

Richtersius coronifer s.s. (Richters, 1903) from the Billefjorden population, eggs seen in LCM. a Midsection under 400× magnification seen under NCM. b. Surface under 400× magnification seen under NCM. c–d Midsection under 1000× magnification seen in PCM and NCM, respectively. e. Surface under 1000× magnification seen in NCM. Arrowheads indicate divided process apices. Scale bars in μm