Presence of Proterotheriidae (Mammalia, Litopterna) in the Pleistocene of the Bonaerian Pampas. The fossil record of Pleistocene Proterotheriidae is scarce. It is restricted to the species Neolicaphrium recens known from Brazil, Uruguay, and Argentina, and to Uruguayodon alius, from Uruguay. Up to the date, proterotheriids are absent from the Pleistocene record of the Pampean Region. The aim of the present contribution is to report isolated remains of proterotheriids coming from Punta Indio and Punta Médanos localities, at the coast of Buenos Aires Province, Argentina. The specimens were found in the coastline and lack precise stratigraphical position. These findings indicate that Pleistocene proterotheriids were probably more diversified and geographically widespread than previously thought. Keywords: Punta Piedras, Punta Medanos, Pampean Region, Buenos Aires Province, Neolicaphrium. RESUMO – O registro fóssil pleistocênico de Proterotheriidae é escasso. Se restringe às espécies Neolicaphrium recens, conhecida para o Brasil, Uruguai e Argentina, e Uruguayodon alius do Uruguai. Até o presente momento, os proteroterídeos estão ausentes no Pleistoceno da Região Pampeana da Argentina. A presente contribuição tem por objetivo reportar restos isolados de proteroterídeos provenientes das localidades de Punta Indio e Punta Médanos, região costeira da Província de Buenos Aires, Argentina. Os espécimes foram encontrados na linha de costa e carecem de contexto estratigráfico preciso. Estes achados sugerem que os proteroterídeos pleistocênicos eram possivelmente mais diversificados e mais amplamente distribuídos geograficamente do que se supunha anteriormente. Palavras-chave: Punta Piedras, Punta Medanos, Región Pampeana, Província de Buenos Aires, Neolicaphrium.

Presence of Proterotheriidae (Mammalia, Litopterna) in the Pleistocene of the Bonaerian Pampas. The fossil record of Pleistocene Proterotheriidae is scarce. It is restricted to the species Neolicaphrium recens known from Brazil, Uruguay, and Argentina, and to Uruguayodon alius, from Uruguay. Up to the date, proterotheriids are absent from the Pleistocene record of the Pampean Region. The aim of the present contribution is to report isolated remains of proterotheriids coming from Punta Indio and Punta Médanos locities, at the coast of Buenos Aires Province, Argentina. The specimens were found in the coastline and lack precise stratigraphical position. These findings indicate that Pleistocene proterotheriids were probably more diversified and geographically widespread than previously thought. Keywords : Punta Piedras, Punta Medanos, Pampean Region, Buenos Aires Province, Neolicaphrium. RÉSUMÉ – O registre fossile pléistocène de Proterotheriidae e escasso. Les espèces Neolicaphrium recens, conhecida para o Brasil, Uruguai et Argentina, et Uruguayodon alius do Uruguai sont restreintes. Até o presente momento, os proteroterídeos estão absentes no Pleistoceno da Região Pampeana da Argentina. L'objectif de cette contribution est de signaler les restes isolés de proteroterídeos provenant des localités de Punta Indio et Punta Médanos, région côtière de Província de Buenos Aires, Argentine. Les spécimens foram trouvés na linha de costa e mancem de contexte stratigraphique précis. Ces aigus suggèrent que les protérotéridés pléistocéniques étaient possiblement du maïs diversifié et du maïs largement distribué géographiquement qui est supposé précédemment. Palavras-chave : Punta Piedras, Punta Medanos, Région Pampeana, Província de Buenos Aires, Neolicaphrium.

Presence of Proterotheriidae (Mammalia, Lithopterna) in the Pleistocene of the Bonaerian Pampas. The fossil record of Pleistocene Proterotheriidae is scarce. It is restricted to the species Neolicaphrium recens known from Brazil, Uruguay, and Argentina, and to Uruguayodon alius, from Uruguay. Up to the date, proterotheriids are absent from the Pleistocene record of the Pampean Region. The aim of the present contribution is to report isolated remains of proterotheriids coming from Punta Indio and Punta Médanos localities, at the coast of Buenos Aires Province, Argentina. The specimens were found in the coastline and lack precise stratigraphical position. These findings indicate that Pleistocene proterotheriids were probably more diversified and geographically widespread than previously thought. Keywords: Punta Piedras, Punta Medanos, Pampean Region, Buenos Aires Province, Neolicaphrium. ABSTRACT – O fossil pleistocênico record of Proterotheriidae is scarce. It restricts species Neolicaphrium recens, conhecida to Brazil, Uruguay and Argentina, and Uruguayodon alius do Uruguai. Até o presente momento, os proteroterídeos estão ausentes no Pleistoceno da Região Pampeana da Argentina. The objective of this contribution is to report isolated remains of proteroterids from the towns of Punta Indio and Punta Médanos, coastal region of the Province of Buenos Aires, Argentina. The foram specimens found na linha de costa and lack of precise stratigraphic context. Estes achados we suggest that os proteroterídas pleistocênicos eram possivelmente mais diversificados e mais widely distributed geographically do that is assumed above. Palavras-chave: Punta Piedras, Punta Medanos, Pampas Region, Province of Buenos Aires, Neolicaphrium.

وجود Proterotheriidae (الثدييات، Lithopterna) في العصر الجليدي في بونيريان بامباس. السجل الأحفوري للبليستوسين Proterotheriidae نادر. ويقتصر على الأنواع Neolicaphrium recens المعروفة من البرازيل وأوروغواي والأرجنتين، وإلى Uruguayodon alius، من أوروغواي. حتى الآن، تغيب proterotheriids عن سجل Pleistocene في منطقة Pampean. الهدف من هذه المساهمة هو الإبلاغ عن بقايا معزولة من البروتيروثيريدس القادمة من منطقتي بونتا إنديو وبونتا ميدانوس، على ساحل مقاطعة بوينس آيرس، الأرجنتين. تم العثور على العينات في الساحل وتفتقر إلى الموقع الطبقي الدقيق. تشير هذه النتائج إلى أن البليستوسين proterotheriids ربما كان أكثر تنوعًا وانتشارًا جغرافيًا مما كان يعتقد سابقًا. الكلمات المفتاحية: بونتا بيدراس، بونتا ميدانوس، منطقة بامبيان، مقاطعة بوينس آيرس، نيوليكافريوم. Abstract – O fossil pleistocênico record of Proterotheriidae is scare. إنه يقيد الأنواع Neolicaphrium recens، conhecida إلى البرازيل وأوروغواي والأرجنتين، و Uruguayodon alius do Uruguai. Até o presente momento, os proteroterídeos estão ausentes no Pleistoceno da Região Pampeana da Argentina. الهدف من هذه المساهمة هو الإبلاغ عن بقايا معزولة من البروتيرويدات من مدينتي بونتا إنديو وبونتا ميدانوس، المنطقة الساحلية لمقاطعة بوينس آيرس، الأرجنتين. وجدت عينات الثقب نا لينها دي كوستا وعدم وجود سياق طبقي دقيق. نقترح أن os proteroterídas pleistocênicos eram possivelmente mais diversificados e mais موزعة جغرافيًا على نطاق واسع تفعل ذلك كما هو مفترض أعلاه. شاطئ Palavras - chave: Punta Piedras, Punta Medanos, Pampas Region, Province of Buenos Aires, Neolicaphrium.