2014/06/10 by Thomas Ingicco, John De Vos, O. Frank Huffman · 1 citation
Earth and Planetary Sciences · Psychology · Social Sciences · #Evolution and Paleontology Studies #Primate Behavior and Ecology #Pleistocene-Era Hominins and Archaeology #Pleistocene #Geology #Paleontology #Southeast asia #Early Pleistocene #Archaeology #Geography #Ancient history #History
paper · pdf · doi:10.1371/journal.pone.0099531
openalex publication_date 2014/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
A fossil femur excavated by Eugène Dubois between 1891-1900 in the Lower/Middle Pleistocene bonebed of the Trinil site (Java, Indonesia) was recognised by us as that of a Hylobatidae. The specimen, Trinil 5703 of the Dubois Collection (Leiden, The Netherlands), has the same distinctive form of fossilization that is seen in many of the bonebed fossils from Trinil in the collection. Anatomical comparison of Trinil 5703 to a sample of carnivore and primate femora, supported by morphometric analyses, lead to the attribution of the fossil to gibbon. Trinil 5703 therefore provides the oldest insular record of this clade, one of the oldest known Hylobatidae fossils from Southeast Asia. Because living Hylobatidae only inhabit evergreen rain forests, the paleoenvironment within the river drainage in the greater Trinil area evidently included forests of this kind during the Lower/Middle Pleistocene as revealed here.