Observation fields in use.
collection locale - https://www.inaturalist.org/observation_fields/15915
name of geologic formation/member - https://www.inaturalist.org/observation_fields/15929
dominant associated fauna - https://www.inaturalist.org/observation_fields/15912
subdominant fauna - https://www.inaturalist.org/observation_fields/15913
matrix description - https://www.inaturalist.org/observation_fields/15916
