atzcalli (FCbk11f64v)
This iconographic example, featuring a freshwater clam (atzcalli), is included in this digital collection for the purpose of making comparisons with related hieroglyphs. The term selected for this example comes from the text near the image in the Digital Florentine Codex. There is no gloss, per se. This example shows the clam as horizontal, not fully closed. An animal (the clam in the flesh) is partially coming out of the shell, with its head and arms showing. The use of three-dimensionality here suggests European artistic influence in the tlacuilo.
Stephanie Wood
The creatures that live in seashells are sometimes shown poking out from the shells. This seems to be a reminder that there are edible critters inside the shells. See an example of a conch, below, with its living being emerging.
Stephanie Wood
atzcalli
Stephanie Wood
1577
Jeff Haskett-Wood
animal acuático, animales acuáticos, a sea creature, atlan nemini
atzcal(li), a seashell, a freshwater clam, https://nahuatl.wired-humanities.org/content/atzcalli
la almeja de agua dulce
Stephanie Wood
Available at 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 16 October 2025.
Images of the digitized Florentine Codex are made available under the following Creative Commons license: CC BY-NC-ND (Attribution-NonCommercial-NoDerivs 4.0 International). For print-publication quality photos, please contact the Biblioteca Medicea Laurenziana ([email protected]). The Library of Congress has also published this manuscript, using the images of the World Digital Library copy. “The Library of Congress is unaware of any copyright or other restrictions in the World Digital Library Collection. Absent any such restrictions, these materials are free to use and reuse.”

