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The majority of flora we see now also evolved very late. The dinosaurs probably saw and fed on Conifers, Cycadophytes and Ferns. Grass and Modern leafed flora evolved much later.
There are studies that suggests grass existed around 100 million years ago though, https://www.ncbi.nlm.nih.gov/pubmed/16293759
Topically, I see Britain had everything sorted 150 million years ago while the rest of Europe was in a right heap.
Earlier quoted context omitted.
Lots of mosses though? I imagine more primitive vegetation filled that role.
Dunno! I think most larger dinosaurs then needed larger sources of energy. Look at the teeth of an ankylosaur or most ceratopsians - they're designed to chomp and scissor through large leafy kale.
Last week I was in the field digging dinosaurs in Montana, when one of the dig leaders mentioned there was no grass back then, just lots of ferns, because grass hadn't evolved yet. It kind of blew my mind that for most of dinosaurs, there was just a lot of leafs and ferns. Here's some pictures for context ( https://imgur.com/a/rE5wwc4 ), when you're out where most dino bones are found, you forget that it may have bee…
Has anyone made a large-format map (or better yet: globe) across which one can scroll to past geographic and political maps?
There are numerous specialised atlases and globes. I've never run across a generalised mapping engine and dataset like this.
Wikipedia / Wikimedia have a number of map sets, that might be a place to start your search.
Great question.