Seaweeds, presumably, were much the same as now, and given that several phyla of plants have become extinct since then I could always assume that some of those are edible, but is there anything that springs to mind?
Could they have risked eating fungi? (One of them is French.) ETA: I should add that the rest of them are English.
What might the horses have eaten? I could include cupressus and ginkoes if they wouldn’t poison them.
Also the moon would appear to be considerably bigger during the Permian and Cretaceous. The figure I have is a steady retreat of 4cm a year, but my brain simply won’t do the maths to get an apparent size for the moon. Can anyone help?
Searched: relevant tags here, the entire astronomy, geology and botany sections at my local library
BBC series ‘Walking with Monsters/Dinosaurs/Beasts’ and spin-off publications
Hugh Johnson: International Encyclopaedia of Trees
Stephen J Gould (ed) The Book of Life
Douglas Dixon: The Complete Book of Dinosaurs
Viking Atlas of Evolution
A useful thread at fanficrants
Various combinations of: cycads edibility evolution ferns horses palaeobotany (BE and AE spelling) pines pinus
“size of moon” + geological period
Any help would be much appreciated!