itaboraianとは 意味・読み方・使い方

語源

From Portuguese Itaboraí, specifically referring to the Itaboraí Formation (Formação Itaboraí), which is near the city of Itaboraí, Brazil.

固有名詞

the Itaboraian

1. (geology, paleontology) A geologic age, 53.0–50.0 mya and within the Ypresian (Early Eocene), whose stratotype is the Itaboraí Formation; used especially in the context of South American land mammal age (SALMA) classification.
   • 2012, John J. Flynn, Reynaldo Charrier, Darin A. Croft, Andre R. Wyss, “Cenozoic Andean Faunas”, in Bruce D. Patterson, Leonora P. Costa, editors, Bones, Clones, and Biomes, University of Chicago Press, page 62:

     Carodnia is known only from the Itaboraian in both Patagonia, where it was first discovered, and Brazil, where it is better represented.

   • 2013, Richard A. Fariña, Sergio F. Vizcaíno, Gerry De Iuliis, Megafauna: Giant Beasts of Pleistocene South America, University of Indiana Press, page 85,

     The Panriochican Subcycle includes two ages, the Itaboraian and the Riochican, summarized below.

形容詞

Itaboraian (not comparable)

1. (geology, paleontology) Of, pertaining to or occurring within the Itaboraian age.

Further reading

• South American land mammal age on Wikipedia.Wikipedia