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 drawing from the 16th century Florentine Codex showing a One Flower ceremony with a teponaztli (foreground) and a huehuetl (background).
This is a type of teponaztli made out of a turtle shell or ayotapalcatl [ajotaˈpaɬkat͡ɬ]

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