Derived from an old diminutive of MARTIN. MAXWELL Scottish. From a place name meaning Mack's stream, from the name Mack, a short form of the Scandinavian name MAGNUS, combined with Old English wella stream ...
For the ray-finned fish known as common dolphin, see Mahi-mahi. The common dolphin is the name given to two species (and possibly a third) of dolphin making up the genus Delphinus. Prior to the mid-1990s, most taxonomists only recognised one species in this genus, the common dolphin Delphinus delphis.
A genus is a scientific way of showing that species are very closed related to each other. In fact the first word of the species' scientific name is its genus. So for lions (Panthera leo), Panthera is the genus and tells us that they are closely related to tigers (Panthera tigris), because they share the name.1  Bottlenose dolphins.n fact the first word of the species' scientific name is its genus. So for lions (Panthera leo), Panthera is the genus and tells us that they are closely related to tigers (Panthera tigris), because they share the name. 1  Bottlenose dolphins.