Hence we ought not to expect at the present time to meet with numerous transitional varieties in each region, though they must have existed there, and may be embedded there in a fossil condition.
Horregatik ez genuke espero behar gaur egun herrialde bakoitzean iragaitzazko aldaki askorik topatzerik, nahitaez hantxe existitu eta hantxe lurperaturik fosil egoeran aurki daitezkeen arren.