Dan David Foundation · 2025 · Prize ceremony & social media

On Mackenzie Cooley, and the bone the Tlaxcalans showed Cortés.

A short tribute on a historian of nature and power in the early modern world — and on an enormous bone shown to Cortés in 1519, as proof that the ancestors of Tlaxcala had conquered giants.

Client
Dan David Foundation
Subject
Prof. Mackenzie Cooley, Hamilton College
Direction
Daniella Koffler
Animation
Moofa Animation Team
Year
2025
Kind
Ceremony film
The subject

Mackenzie Cooley is Associate Professor of History at Hamilton College, where she directs the program in Medieval and Renaissance Studies. Her book The Perfection of Nature: Animals, Breeding, and Race in the Renaissance (University of Chicago Press, 2022) traces how ideas of race and theories of inheritance took shape through animal breeding in the shadow of the Spanish Empire, drawing on Italian, Latin, Spanish, and Nahuatl sources.

Her work reaches from the studbook to the giant's bone: her article "The Giant Remains" follows the enormous fossil bones unearthed across Mesoamerica, and the way thinkers on both sides of the conquest, Nahua and Spanish, used them to reason about the age of the earth. The Dan David Prize honored Cooley for the originality and ambition of her archival research across the former Spanish Empire, and for bringing indigenous languages and knowledge systems into the history of European science.

The aim

The film describes one encounter. In 1519 Hernán Cortés arrived in Mexico and began seeking indigenous allies for his attack on the Aztec capital. He and his men met the leaders of Tlaxcala, who showed the Europeans an enormous bone to prove their formidable ability as warriors: their ancestors, they explained, had conquered giants. An object out of the ground took on a political meaning. Cooley thinks Cortés was impressed; he may have been, or not — we do not know. What we know is what followed. The Spanish accepted the explanation, the Tlaxcalans helped take Tenochtitlan, and after much bloodshed it became Mexico City. The bone is now known to be the remains of a Columbian mammoth. Cortés arranged to send it as a gift to the Holy Roman Emperor Charles V; it is not clear it ever reached Europe.

The film’s task was to explain that encounter, and it stays with the object: carried, shown, accepted, hung in a hall, drawn, and finally crated for a king.

The giants are drawn in the style of the engravings in Cooley’s sources, like the “Gygantis Sceleton” below.

Source material
Early modern engraving, 'Gygantis Sceleton', a giant beside smaller figures
"Gygantis Sceleton", early modern European engraving. A giant reconstructed from bones, ranked beside Goliath and other legendary giants. When enormous fossil bones surfaced in the earth, European scholars read them as the remains of a vanished race of giants, one of the ways the period tried to know the deep past through the body of nature.
What we did with it
Film still: robed men examining a giant bone lowered against a wall
The bone in the hall. To forge the alliance, the Spanish had to accept the Tlaxcala’s beliefs about their own history, and their interpretation of evidence drawn from nature.
Source material
Manuscript page from Materia medicinal de la Nueva España, c. 1590
Francisco Hernández, Materia medicinal de la Nueva España, c. 1590. A page from an early catalogue of the plants and medicine of New Spain, the coapatli entry, Biblioteca Complutense de Madrid. Works like this recorded Nahua botanical and medical knowledge inside a European natural-history frame, exactly the fusion of knowledge systems at the centre of Cooley's work.
What we did with it
Film still: a European naturalist and a Nahua woman among plants, a bone standing upright
The naturalists, later. When European naturalists sought to explain such bones, common in the region, their explanations combined Nahua histories of human conquest with Spanish colonial knowledge of medicine and natural history.
Film still: a cloaked figure on the shore, a pyramid city in the distance across the water
1519

Cortés arrives in Mexico.

He began seeking indigenous allies for his planned attack on the Aztec capital.

Film still: a procession of Tlaxcalans carrying an enormous bone on their shoulders
Tlaxcala

The bone is carried in.

He and his men met with the leaders of Tlaxcala. The Tlaxcalans showed the Europeans an enormous bone, to prove their formidable ability as warriors.

Film still: the Tlaxcalans present the bone to Cortés, seated, with his men standing beside him
The showing

Shown to Cortés.

Their ancestors, they explained, had conquered giants.

Film still: a towering giant and a small man standing beside him, in grey wash
The ancestors

What the bone was said to prove.

The Spanish accepted this explanation.

Film still: two hands clasped, one European, one Tlaxcalan, painted red
The alliance

A hand in red.

The Tlaxcalans would help with the invasion of Tenochtitlan.

Film still: a stepped temple in flames
Tenochtitlan

After much bloodshed.

It became Mexico City, part of the Spanish colony of New Spain. The bone itself is now known to be the remains of a Columbian mammoth.

Film still: a red crate on a dock, rigging around it, a ship beyond
The gift

Crated for a king.

Cortés arranged to send it as a gift to the Holy Roman Emperor Charles V. It is not clear if it ever made it to Europe.

The Dan David films

Each year the Foundation chooses, with the laureate, the subject of the film they are honoured for, and we turn it into script, image and motion. The laureate sees it for the first time on the evening of the prize — on the big screen, in a room full of people who have come to honour them. Afterwards the films go out on social media, YouTube, Facebook, LinkedIn and more, and on the Foundation’s own site, beside the committee’s reasoning and the laureate’s interview, and some laureates carry them into their own classrooms, to show what it is they work on.

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