They don't even have to be the same species.
The Ancient Egyptians hardly seem to be the same species as us.
However, a species can change gradually during evolution and still be the same species.
"I am ashamed to be the same species as this man," MacEnulty recalled her saying.
Until now, the two midsize animals were thought to be the same species.
Can this be the same species reviled by homeowners and local authorities as a weed, and by landscape architects as non-native?
Five anaerobic high dye-degrading bacteria were isolated, which were identified to be the same species of Lactococcus lactis by 16S rRNA sequencing.
The Gunnison sage grouse had long been assumed to be the same species as the related northern sage grouse, even though the two differ starkly in size, appearance, behavior, and now, it turns out, DNA.
Species identification when a group first encountered a new species was occasionally time-consuming; then the pace quickened as many subsequent trees turned out to be the same species.
These include the incompletely known Staurikosaurus pricei from southern Brazil and northwestern Argentina and Ischisaurus cattoi, which is very similar to Herrerasaurus and may even be the same species.
To superadd a fresh motive to emigration, by revoking the liberty [p725] which they now enjoy would be the same species of folly which has dishonoured and depopulated flourishing kingdoms.
