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| Hippopotamus antiquus | |
|---|---|
| Name | Hippopotamus antiquus |
| Fossil range | Middle to Late Pleistocene |
| Status | Extinct |
| Genus | Hippopotamus |
| Species | antiquus |
| Authority | Desmarest, 1822 |
Hippopotamus antiquus was a large Pleistocene hippopotamid native to Europe and parts of western Asia, known from abundant fossil remains and historical subfossil finds. First described in the early 19th century, the species played a notable role in Quaternary faunal assemblages and in debates involving paleontologists, geologists, and archaeologists about climate change, faunal migrations, and human-megafauna interactions. Its remains have featured in museum collections, field studies, and natural history accounts across institutions in Europe and beyond.
Hippopotamus antiquus was assigned to the genus Hippopotamus by early taxonomists such as Anselme Gaëtan Desmarest and later revised in comparative work involving researchers at institutions like the Natural History Museum, the Muséum national d'Histoire naturelle, and the Royal Society. Phylogenetic analyses have compared H. antiquus with extant Hippopotamus amphibius and extinct taxa including Hippopotamus melitensis, Hippopotamus creutzburgi, Hippopotamus gorgops, Hippopotamus pentlandi, and genera such as Hexaprotodon and Choeropsis to infer relationships shaped by Pleistocene dispersal events linked to glacial cycles studied by paleoclimatologists at centers like the British Antarctic Survey and the Max Planck Institute. Debates over species limits have involved systematists drawing on morphological characters used in faunal lists curated by the Smithsonian Institution, the Natural History Museum of Los Angeles County, and the University of Florence. Molecular studies by groups associated with institutions like the University of Copenhagen and the Natural History Museum, London, have informed broader hippo phylogenies alongside work on proboscideans by the American Museum of Natural History and on suids by the Museo Nacional de Ciencias Naturales.
Hippopotamus antiquus was larger than many contemporaneous hippos described in regional catalogs at the British Museum and the Museo di Storia Naturale, with estimated body masses discussed in publications from universities such as Cambridge, Oxford, and the University of Rome. Osteological comparisons involving skulls, mandibles, and limb bones housed in collections at the Staatliches Museum für Naturkunde, the Naturalis Biodiversity Center, and the Musée de l'Homme indicate robust zygomatic arches, large incisors and canines resembling forms noted by comparative anatomists at the Royal Society of London and the Accademia dei Lincei. Dental microwear and enamel isotopic signatures studied by teams at the University of Groningen and the University of Barcelona suggest feeding adaptations that echoed observations made for Hippopotamus amphibius in field reports from the Zoological Society of London and the National Geographic Society. Measurements recorded in monographs from the Linnean Society and the Geological Society of London provide morphometric baselines used by paleontologists and museum curators for species identification.
Fossils and subfossils of Hippopotamus antiquus have been recovered from sites across Italy, France, Spain, Britain, Greece, Turkey, Israel, and the Balkans, documented in excavation reports deposited at institutions like the British Museum, the Louvre, the Archaeological Museum of Thessaloniki, and the Museo Nazionale Romano. Regional surveys by archaeologists associated with the University of Oxford, the University of Cambridge, and the University of Athens have linked hippo occurrences to river valleys, coastal lagoons, and floodplains analogous to habitats investigated by ecologists at the University of Seville and the University of Lisbon. Correlations with stratigraphic sequences established by geologists from the Geological Survey of Norway, the Institut Géologique National, and the German Research Centre for Geosciences place many sites within interglacial phases recognized in frameworks developed by the International Union for Quaternary Research and the Palaeontological Association.
Inferences about the ecology and behavior of Hippopotamus antiquus derive from taphonomic studies, isotopic analyses, and comparisons with extant megafauna reported by teams at the Max Planck Institute for Evolutionary Anthropology, the University of Tübingen, and the University of Zurich. Stable isotope results published by laboratories at the University of Cambridge and the University of Leeds indicate water-dependence and dietary patterns that parallel observations of modern hippopotami documented by researchers from the Wildlife Conservation Society and the East African Wildlife Society. Associations with coeval fauna such as Mammut, Elephas, Rhinoceros species, Equus, and cervids have been cataloged in faunal lists from the Natural History Museum Vienna, the Museo Nacional de Ciencias Naturales, and the Hungarian Natural History Museum, informing reconstructions by paleoecologists at the University of Bonn and the University of Milan. Archaeological sites where hippo bones occur alongside lithic industries studied by the British School at Rome and the Institut Català de Paleoecologia suggest potential interactions with hominins considered in research by the Max Planck Institute for Evolutionary Anthropology, the University of Cambridge, and the University of Leiden.
The fossil record of Hippopotamus antiquus includes well-preserved crania, mandibles, and postcranial elements housed in collections of the Natural History Museum, the Muséum national d'Histoire naturelle, the Staatliches Museum für Naturkunde, and regional museums such as the Museo di Paleontologia di Verona. Key localities documented in paleontological bulletins from the Geological Survey of Italy, the Proceedings of the Royal Society, and Annales de Paléontologie include sites in the Arno Basin, the Rhône Valley, the Ebro Basin, and Pleistocene terraces of the Thames, with cataloging work by curators at the University of Florence, the University of Montpellier, and the University of Barcelona. Stratigraphic frameworks incorporating luminescence dating and amino acid racemization techniques used by laboratories at the University of Oxford, the University of Sheffield, and the University of Bologna have refined chronological placements referenced in syntheses by the Palaeontological Association and the Quaternary Research Association.
Extinction of Hippopotamus antiquus occurred during the Late Pleistocene amid climatic fluctuations tracked by paleoclimatologists at the British Antarctic Survey, the University of Bergen, and the Alfred Wegener Institute. The timing and causes have been debated in literature from institutions such as the Max Planck Institute, the University of Cambridge, and the Natural History Museum, invoking habitat contraction during stadials, competition with other megafauna cataloged at the American Museum of Natural History, and possible human impacts discussed in reports from the British School at Athens and the Instituto Archaeológico Alemán. Regional extirpations paralleled changes recorded in pollen records analyzed by teams at the University of Lund and the Swedish Museum of Natural History, and in sea-level curves compiled by the International Marine Data and Information Service, situating H. antiquus within broader Pleistocene extinction patterns assessed by the International Union for Conservation of Nature and paleobiologists at institutions such as the University of California, Berkeley.
Category:Pleistocene hippopotamuses