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atzcalli.

Headword: 
atzcalli.
Principal English Translation: 

a seashell, a shellfish (see Molina); a freshwater clam (Florentine Codex, Book 11, f. 64v)

IPAspelling: 
ɑtskɑlli
Alonso de Molina: 

atzcalli. ostia dela mar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

The atzcalli is supposedly like the tapachtli, and said to be a synonym, but the Florentine Codex has been interpreted to show the tapachtli as a Vogde's scallop and the atzcalli as a freshwater clam. On folio 212 recto, one will see variations on the clam (quetzalatzcalli, chalchiuhatzcalli, and huitzitzilatzcalli).
Digital Florentine Codex/Códice Florentino Digital, edited by Kim N. Richter and Alicia Maria Houtrouw, "Book 11: Earthly Things", fol. 64v, Getty Research Institute, 2023. https://florentinecodex.getty.edu/en/book/11/folio/64v/images/0 Accessed 26 October 2025. And see: https://florentinecodex.getty.edu/book/11/folio/212r/images/0.

themes: 
Animals, Bugs, Insects, Reptiles, Fish, etc.
Food, Eating, Cooking
Marine, Maritime, Lacustrine
Shells
See also: 
tapachtli.