Teponaztli

Teponaztli
These 2 drums in the American Museum of Natural History are approximately 2 feet (60 cm) long.
Percussion instrument
Classification Percussion
Hornbostel–Sachs classification111.2
(Percussion idiophones)
Related instruments
temple blocks, Log drums, muyu, wood block

A teponaztli [tepoˈnast͡ɬi] is a type of slit drum used in central Mexico by the Aztecs and related cultures.