upper jaw.
Beluga |_Delphinapterus_| 99| 8-11| 8-9 | -- --
| _leucas_ | | | |
Narwhal |_Monodon_ |102| 2 | 0[A]|One (rarely both)
| _monoceros_ | | | | grows up to 9 ft
| | | | | (2.5 m) tusk which
| | | | | has left-hand
| | | | | (sinestral) spiral.
Spotted dolphin |_Stenella_ |104|30-36|28-35| -- --
| _plagiodon_ | | | |
Bridled dolphin |_Stenella_ |108|29-34|33-36| -- --
| _frontalis_ | | | |
Spinner dolphin |_Stenella_ |110|46-65|46-65| -- --
| _longirostris_| | | |
Striped dolphin |_Stenella_ |113|43-50|43-50| -- --
| _coeruleoalba_| | | |
Saddleback dolphin |_Delphinus_ |116|40-50|40-50| -- --
| _delphis_ | | | |
Fraser's dolphin |_Lagenodelphis_ |120|38-44|38-44| -- --
| _hosei_ | | | |
Atlantic white-sided|_Lagenorhynchus_|123|30-40|30-40|Some specimens have
dolphin | _acutus_ | | | | more teeth in upper
| | | | | than in lower jaw.
White-beaked dolphin|_Lagenorhynchus_|126|22-28|22-28| -- --
| _albirostris_ | | | |
Atlantic bottlenosed|_Tursiops_ |128|20-26|18-24| -- --
dolphin | _truncatus_ | | | |
Guiana dolphin |_Sotalia_ |132|26-35|26-35| -- --
| _guianensis_ | | | |
Rough-toothed |_Steno_ |135|20-27|20-27|Crown is sometimes
dolphin | _bredanensis_ | | | | marked with many
| | | | | fine vertical
| | | | | wrinkles.
Pygmy killer whale |_Feresa_ |138| 8-13|10-13|Many specimens have.
| _attenuata_ | | | | fewer teeth on right
| | | | | than on left side.
Many-toothed |_Peponocephala_ |142|22-25|21-24| -- --
blackfish | _electra_ | |