The last specialization is seen in at least one taxon of Orthogeomys (Orthogeomys cherriei costaricensis).
The second entry is the name-combination herein applied to the taxon.
Taxol′ogy, the science of classification; taxon′omer, a taxonomist.
Other entries are first usages, in chronological order, of other names (synonyms) that have been applied to the taxon in question.
taxon tax·on (tāk'sŏn')
n. pl. tax·a (tāk'sə)
A taxonomic category or group, such as a phylum, order, family, genus, or species.