A relatively simple feature request to alleviate a bit of an aesthetic pet peeve: I’d like to propose using a dagger (†) before an extinct taxon name, with the taxon greyed out and placed at the end of a list within the taxonomic tree. Hovering over the symbol (or taxon name) would explain to a user that the taxon is extinct. I think it would make things look a lot less clunky—I’ve seen some taxa that look a little cluttered and I think this might help address it unobtrusively (i.e. not having to remove all of the [extinct] taxa if they are simply moved to the end of the list).
A few things—I have seen some people say that † is a religious symbol. It’s not. It can be used in such a way, but it has a much broader typographic use and did not originate for that purpose. Daggers in serif typefaces are often stylised as actual daggers.
I understand iNat is not a taxonomic database and is based on users interacting with nature. I don’t believe that this infringes on that and it makes things cleaner for everyone.
If the point of the [extinct] tag is to make things clear to users and reduce subtlety, would the same not apply to the use of ! for introduced taxa, ☆ for endemics, and other symbols that are unique to iNaturalist? While I know “EX” is the technical equivalent to those symbols, I think any issues that may come about from using † would be no greater than the use of the other symbols. † is a universal symbol and the ability to hover over things for an explanation seems to solve any lingering confusion.
An argument may be to prevent fossil taxa from existing on iNat as a whole (and only allowing recently extinct taxa). I think this would be problematic as the presence of extinct taxa can offer users more insight into the histories of certain groups and encourage more curiosity and emphasis on conservation. There is a lot to be gained from allowing fossil images to be uploaded (even though they are restricted to Casual) as they can teach a lot. But I suppose that’s a different conversation.