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 [1][2]. Alongside the early hominin remains, the site has also produced numerous vertebrate fossils [3][4] which have contributed to our understanding of regional Pleistocene vertebrate biostratigraphy [5][6][7][8] and biogeography [9][10]. Additionally, a fossil shell with a geometric pattern, considered the world’s oldest hominin-made engravings was also discovered at the site [11][12].