I just noted that the palaeobotany is using british spelling, while all the other similar tags are using american spelling (e.g. paleontology. As a community, we should strive for tags using the same spelling forms, so that they have a logical consistency. At the moment I do not have the reputation to edit or retag the relevant questions, but maybe one of the moderators could take a look at this.
This has been discussed on the mother meta before.
The bottom line then, was:
- posters are free to write in their own dialect of English
- but tagging should be in American English.
The British-spelt tags can be made synonyms of the American-spelt tags