Hi all, you are my biggest hope

This is probably really dumb, but I have the following problem and my stats courses are just too long ago: I need to visualise the change of surface area of two bones (A and B) over time. So, for example, in one dinosaur, bone A is 300 cmÂ² in surface area and bone B is only 100 cmÂ². In a later occurring, but much smaller dinosaur, bone A is 5 cmÂ² and bone B is 2cmÂ². An extent taxon of alligator has a bone A with a surface area of 30cmÂ² and bone B is 90cmÂ².

Since all the animals are of different size, I want to reduce that factor. I am thinking that simply the ratio could probably help. But what if one super old dinosaur has no bone A because it has not evolved yet and an extant bird does not have bone B anymore? Then I have values of 0, which makes ratios impossible.

I just need to plot this nicely, to track whether there is a trend over time. And my brain feels fried. Plz send help!

This is probably really dumb, but I have the following problem and my stats courses are just too long ago: I need to visualise the change of surface area of two bones (A and B) over time. So, for example, in one dinosaur, bone A is 300 cmÂ² in surface area and bone B is only 100 cmÂ². In a later occurring, but much smaller dinosaur, bone A is 5 cmÂ² and bone B is 2cmÂ². An extent taxon of alligator has a bone A with a surface area of 30cmÂ² and bone B is 90cmÂ².

Since all the animals are of different size, I want to reduce that factor. I am thinking that simply the ratio could probably help. But what if one super old dinosaur has no bone A because it has not evolved yet and an extant bird does not have bone B anymore? Then I have values of 0, which makes ratios impossible.

I just need to plot this nicely, to track whether there is a trend over time. And my brain feels fried. Plz send help!

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