The Trinil site on Java Island in Indonesia is well-known for the discovery of the Homo erectus, previously known as Pithecanthropus erectus, by Dutch anatomist Eugène Dubois. His hominin finds were the first early hominin remains discovered outside of Europe (Dubois 1892, Trinil WP). Alongside the early hominin remains, the site has also produced numerous vertebrate fossils (Dubois 1907, Selenka and Blanckenhorn 1911) which have contributed to our understanding of regional Pleistocene vertebrate biostratigraphy (Von Koenigswald 1934, 1935, De Vos 1982, Sondaar 1984) and biogeography (Van den Berghe et al. 1996, Van der Geer 2019). Additionally, a fossil shell with a geometric pattern, considered the world’s oldest hominin-made engravings was also discovered at the site (Joordens et al. 2015, Berghuis et al. 2021).