How long would an animal identification sheet take to make

So today i started making an animal identification sheet and i want people to estimate how long the class reptilia is gonna take so far got through crocodillia with all 28 species of crocodillians in about an hour and a half but theres more than 3000 species of snakes so i want to hear how long people think it will take to do

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This is squamata aka lizards and snakes this is the hard part I don’t even know if its all of them

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