Earliest evidence of Mayan calendar found
7:45 JST, May 11, 2022
WASHINGTON (Reuters) — A glyph representing a day called “7 Deer” on mural fragments dating from the third century B.C. found inside the ruins of a pyramid in Guatemala marks the earliest-known use of the Mayan calendar, one of this ancient culture’s renowned achievements.
The fragments were found at the San Bartolo archeological site in the jungles of northern Guatemala, which gained fame with the 2001 discovery of a buried chamber with elaborate and colorful murals dating to about 100 B.C. depicting Mayan ceremonial and mythological scenes, researchers said April 13.
The pieces with the “7 Deer” glyph were unearthed inside the same Las Pinturas pyramid where the still-intact later murals were located. As was the case with this structure, the Maya often built what initially were modest-size temples, then constructed ever-larger versions atop the earlier ones. This pyramid eventually reached about 30 meters tall.
The glyph found on the mural fragments for “7 Deer,” one of the calendar’s 260 named days, consisted of the ancient Mayan writing of seven over the outline of a deer’s head.
University of Texas professor of Mesoamerican art and writing David Stuart, lead author of the research published in the journal Science Advances, described the fragments as “two small pieces of white plaster that would fit in your hand, that were once attached to a stone wall.”
“The wall was intentionally destroyed by the ancient Maya when they were rebuilding their ceremonial spaces — it eventually grew into a pyramid. The two pieces fit together and have black painted calligraphy, opening with the date ‘7 Deer.’ The rest is hard to read,” Stuart added.
“The paintings from this phase are all badly fragmented, unlike any from the later, more famous chamber,” Stuart said.
Until now, the earliest definitive Mayan calendar notation dated to the first century B.C.
The calendar, rooted upon observations of the movements of the sun, moon and planets, was based on a ritual cycle of 260 named days. The 260-day calendar, called the tzolk’in, was one of several interrelated Mayan systems of reckoning time, also including a solar year of 365 days, a larger system called the “Long Count” and a lunar system.
The calendar was among the achievements of a culture that also developed a writing system encompassing 800 glyphs, with the earliest examples also from San Bartolo. The Maya built temples, pyramids, palaces and observatories and engaged in sophisticated farming without using metal tools or the wheel.
San Bartolo was a regional center during the Mayan Preclassic period, spanning from about 400 B.C. to 250 A.D. This age set the foundation for the blossoming of Mayan culture during the subsequent Classic period, known for cities including Tikal in Guatemala, Palenque in Mexico and Copan in Honduras.
About 7,000 mural fragments — some as small as a fingernail and others up to 20-by-40 centimeters — have been found at San Bartolo, amounting to what anthropology professor and study coauthor Heather Hurst of Skidmore College in New York State called “a giant jigsaw puzzle.”
The “7 Deer” and other notations seen on 11 San Bartolo mural fragments examined in the study hint at mature artistic and writing conventions in the region at the time, suggesting the calendar already had been in use for many years.
“Other sites will likely find other examples, perhaps even earlier examples,” Hurst said.
“Second, the scribal tradition represented in these 11 fragments is diverse, expressive, their technology for paint preparation and calligraphic fluidity is impressive — this was a well-established tradition of writing and art,” Hurst added.
Some Maya communities today still use the ancient calendar.
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