Rename taxonomic_history. Move #header near similar method. Remove private.
Export subgenus
Output subgenus name properly
Output subspecies
Format
Reference ID
Biogeographic region
Locality
Default argument
Current valid rank
Refactor: replace conditional with polymorphism
Current valid parent
Fix
Current valid parent
Current valid parent
Remove unneeded code
Skip over a subspecie's species for its parent if there is none
Handle blank species
Handle blank subfamily
Current valid parent