help me plz (Patreon)

so i'm working on the final bit of research for the ordovician period video and i've reached a bit of a predicament lol. the fossil record of the transition of animals to land is a bit shaky. there's ~some~ evidence of terrestrial animal activity in the ordovician period, but the first unequivocal fossils known to science of terrestrial animals are in the silurian period. so i'm not sure where to talk about the transition to land. it's a big topic -- and is typically discussed in the silurian period since it can be more confidently placed there with evidence. but little bits of evidence suggest it happened earlier, in the ordovician. so where should i talk about it?