{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T23:46:55Z","timestamp":1787010415167,"version":"build-2736575974"},"reference-count":48,"publisher":"The Royal Society","issue":"8","license":[{"start":{"date-parts":[[2020,8,1]],"date-time":"2020-08-01T00:00:00Z","timestamp":1596240000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/royalsociety.org\/-\/media\/journals\/author\/Licence-to-Publish-20062019-final.pdf"},{"start":{"date-parts":[[2020,8,1]],"date-time":"2020-08-01T00:00:00Z","timestamp":1596240000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/royalsociety.org\/journals\/ethics-policies\/data-sharing-mining\/"}],"funder":[{"DOI":"10.13039\/501100010747","name":"Consejo Nacional de Ciencia, Tecnolog\u00eda e Innovaci\u00f3n Tecnol\u00f3gica","doi-asserted-by":"crossref","award":["Incorporaci\u00f3n de Investigadores, grant E038-2019-"],"award-info":[{"award-number":["Incorporaci\u00f3n de Investigadores, grant E038-2019-"]}],"id":[{"id":"10.13039\/501100010747","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["royalsocietypublishing.org"],"crossmark-restriction":true},"short-container-title":["Biol. Lett."],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:p>\n                    Thirteen million years ago in South America, the Pebas Mega-Wetland System sheltered multi-taxon crocodylian assemblages, with the giant caiman\n                    <jats:italic>Purussaurus<\/jats:italic>\n                    as the top predator. In these Miocene swamps where reptiles and mammals coexisted, evidence of their agonistic interactions is extremely rare. Here, we report a tibia of the mylodontid sloth\n                    <jats:italic>Pseudoprepotherium<\/jats:italic>\n                    bearing 46 predation tooth marks. The combination of round and bisected, shallow pits and large punctures that collapsed extensive portions of cortical bone points to a young or sub-adult\n                    <jats:italic>Purussaurus<\/jats:italic>\n                    (approx. 4 m in total length) as the perpetrator. Other known crocodylians of the Pebas System were either too small at adulthood or had discordant feeding anatomy to be considered. The pattern of tooth marks suggests that the perpetrator attacked and captured the ground sloth from the lower hind limb, yet an attempt of dismembering cannot be ruled out. This discovery from the Peruvian Amazonia provides an unusual snapshot of the dietary preferences of\n                    <jats:italic>Purussaurus<\/jats:italic>\n                    and reveals that prior to reaching its giant size, young individuals might have fed upon terrestrial mammals of about the size of a capybara.\n                  <\/jats:p>","DOI":"10.1098\/rsbl.2020.0239","type":"journal-article","created":{"date-parts":[[2020,8,26]],"date-time":"2020-08-26T03:05:21Z","timestamp":1598411121000},"page":"20200239","update-policy":"https:\/\/doi.org\/10.1098\/crossmark-policy","source":"Crossref","is-referenced-by-count":16,"title":["Predation of the giant Miocene caiman\n                    <i>Purussaurus<\/i>\n                    on a mylodontid ground sloth in the wetlands of proto-Amazonia"],"prefix":"10.1098","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6267-3927","authenticated-orcid":true,"given":"Fran\u00e7ois","family":"Pujos","sequence":"first","affiliation":[{"name":"Instituto Argentino de Nivolog\u00eda, Glaciolog\u00eda y Ciencias Ambientales (IANIGLA), CCT-CONICET-Mendoza, Avda. Ruiz Leal s\/n, Parque Gral. San Mart\u00edn, 5500 Mendoza, Argentina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9990-8841","authenticated-orcid":true,"given":"Rodolfo","family":"Salas-Gismondi","sequence":"additional","affiliation":[{"name":"BioGeoCiencias Lab, Facultad de Ciencias y Filosof\u00eda, Laboratorios de Investigaci\u00f3n y Desarrollo (LID), Centro de Investigaci\u00f3n para el Desarrollo Integral y Sostenible (CIDIS), Universidad Peruana Cayetano Heredia, Lima, Peru"},{"name":"Departamento de Paleontolog\u00eda de Vertebrados, Museo de Historia Natural-Universidad Nacional Mayor de San Marcos, Avenida Arenales 1256, Lima 14, Peru"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2020,8,26]]},"reference":[{"key":"e_1_3_6_2_2","doi-asserted-by":"publisher","DOI":"10.5479\/si.00963801.91-3122.55"},{"key":"e_1_3_6_3_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2014.2490"},{"key":"e_1_3_6_4_2","first-page":"1","article-title":"Fossil crocodilians from Colombia and the Cenozoic history of the Crocodilia in South America","volume":"52","author":"Langston W","year":"1965","journal-title":"Univ. Calif. Publ. Geol. Sci."},{"key":"e_1_3_6_5_2","first-page":"427","article-title":"Nova interpreta\u00e7\u00e3o do g\u00eanero Purussaurus (Crocodylia, Alligatoridae)","volume":"1","author":"Bocquentin VJ","year":"1989","journal-title":"Anais do XI Congressso Brasileiro de Paleontologia"},{"key":"e_1_3_6_6_2","first-page":"1","article-title":"The late Miocene caimanine fauna (Crocodylia: Alligatoroidea) of the Urumaco Formation, Venezuela","volume":"19","author":"Scheyer TM","year":"2016","journal-title":"Palaeontol. Electron."},{"key":"e_1_3_6_7_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0117944"},{"key":"e_1_3_6_8_2","first-page":"35","article-title":"Lake Pebas: a palaeoecological reconstruction of a Miocene, long-lived lake complex in western Amazonia","volume":"1","author":"Wesselingh FP","year":"2002","journal-title":"Cainoz. 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