
Joanna Méndez Herrera
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Joanna Méndez Herrera is a Costa Rican geologist leading the fossil recovery efforts at the Museo Nacional de Costa Rica, where she oversees the excavation and analysis of significant paleontological finds, including remains of a mastodon and giant sloth recently discovered in Cartago.
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Joanna Méndez Herrera is leading the recovery of the fossils as part of the investigation team.
Costa Rica: descubren fósiles de perezoso gigante y mastodonte de al menos 10.000 años - CienciaABC Color – leading Paraguayan newspaper, est. 1967·
Paraguay· 2026-02-15
The recovery of the fossils is led by geologist Joanna Méndez Herrera.
Museo Nacional confirma hallazgo de restos de mastodonte y perezoso gigante en CartagoLa Nación – main Costa Rican daily, est. 1946·
Costa Rica· 2026-02-14



