Well the lighting is superb - most flash pictures don't show things all that well, against a dark background.
About teeth, dentate means tootherd, the sides of the tooth meet at an acute apical pint, denticulate just small versions of dentation; aristate are teeth which then have extended linear tips, like a spine; ciliate are long narrow hair-like ptojections from the margin. Sometimes one gets slightly intermediate states, but generally they are readily distinguishable as different kinds of teeth etc.
A good, close photo of the undersice of a strobilus shouled show the cilia or lack of them on megasporophylls and microsporophylls in these dimorphic strobili - and whether ciliate at their bases etc.
Best,
Chris F.-J.