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Santanachelys gaffneyi is an extinct species of sea turtle. It is the only species in the genus Santanachelys, which itself is a member of the extinct family Protostegidae. The species was first described from a 20-centimeter long fossil specimen unearthed in 1998 from the Santana Formation of eastern Brazil. From the rock layer from which it was excavated, it was determined that the specimen was from the Early Cretaceous period (112 million years old). It is therefore one of the oldest known sea turtles. but a new fossil named Desmatochelys padillai in 2015 is estimated to be as old as 120 million years.

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  • Santanachelys gaffneyi (de)
  • Santanachelys (es)
  • Santanachelys (fr)
  • Santanachelys gaffneyi (nl)
  • サンタナケリス (ja)
  • Santanachelys (en)
  • Santanachelys (pt)
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  • サンタナケリス (Santanachelys) は、中生代白亜紀中期の約1億1,000万年前に生息していたカメの絶滅した属。爬虫綱・双弓亜綱・カメ目・プロトステガ科に属する。属名はブラジル・セアラー州、にある白亜紀の地層、より。 種名はアメリカ自然史博物館の博士にちなんで命名された。命名者は早稲田大学教授、平山廉。以前は最古のウミガメとされていたが2015年にDesmatocheys padillaiがより古い年代から発見されたため現在は異なる。 (ja)
  • Santanachelys é um gênero fóssil de tartaruga marinha da família Protostegidae do Cretáceo Inferior do Brasil. Há uma única espécie descrita para o gênero Santanachelys gaffneyi. Seus restos fósseis foram encontrados na formação Santana no estado do Ceará e datados do Albiano com cerca de 110 milhões de anos. (pt)
  • Santanachelys es un género extinto de tortuga marina perteneciente a la familia Protostegidae. La especie tipo, S. gaffneyi fue descrita a partir de un espécimen fósil de 20 centímetros de largo descubierto en 1998 en el este de Brasil. Considerando la capa de roca de la cual fue excavado, se determinó que el espécimen era del Cretácico Inferior, hace unos 110 millones de años.​ (es)
  • Santanachelys gaffneyi war bis zum Jahr 2015 die älteste bekannte fossile Meeresschildkröte. Fossilien dieser Art wurden in den Ablagerungen der höchsten Unterkreide (Albium) gefunden und sind etwa 110 Millionen Jahre alt. Sie sind somit zur Charakterisierung und Erforschung der frühen Evolution der Echten Meeresschildkröten und der Lederschildkröten von großer Bedeutung. Santanachelys gaffneyi wird vom Erstbeschreiber Ren Hirayama in die heute ausgestorbene Familie der Protostegidae gestellt, deren prominentester Vertreter Archelon aus der Oberkreide Nordamerikas ist, die größte bekannte marine Schildkröte in der Erdgeschichte. Gefunden wurde Santanachelys gaffneyi in Ostbrasilien in der Santana-Formation, in der neben einer Vielzahl von Fischfossilien auch einige interessante Schildkröt (de)
  • Santanachelys gaffneyi is an extinct species of sea turtle. It is the only species in the genus Santanachelys, which itself is a member of the extinct family Protostegidae. The species was first described from a 20-centimeter long fossil specimen unearthed in 1998 from the Santana Formation of eastern Brazil. From the rock layer from which it was excavated, it was determined that the specimen was from the Early Cretaceous period (112 million years old). It is therefore one of the oldest known sea turtles. but a new fossil named Desmatochelys padillai in 2015 is estimated to be as old as 120 million years. (en)
  • Santanachelys gaffneyi Santanachelys Santanachelys gaffneyi, vue d'artiste. Genre † SantanachelysHirayama, 1998 Espèce † Santanachelys gaffneyiHirayama, 1998 Santanachelys forme un genre éteint de petites tortues marines de la super-famille des Chelonioidea. Une seule espèce est rattachée au genre : Santanachelys gaffneyi. Ces fossiles nous donnent des informations précises sur l'évolution des Dermochelyoidea et des Chelonioidea. (fr)
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