Torrejonian

The Torrejonian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 63,300,000 to 60,200,000 years BP lasting 3.1 million years.[1]

The Torrejonian is preceded by the Puercan and followed by the Tiffanian NALMA stages. The Torrejonian-Tiffanian boundary is often correlated with the Danian-Selandian boundary (on the global timescale), the Shanghuan-Nongshanian boundary (in Asian land mammal ages), and the C27n-C26r polarity chron boundary (on the geomagnetic polarity time scale).[2]

The Torrejonian is considered to be contained within the Danian and contains the following substages:

  • To3: Lower boundary source of the base of the Torrejonian (approximate).
  • To2: Lower boundary source of the base of the Torrejonian (approximate) and upper boundary source of the base of the Selandian (approximate).
  • To1: Upper boundary source (61.7 Ma) of the base of the Selandian (approximate).

References

  1. ^ Paleobiology Database, Torrejonian
  2. ^ TINGSu-Yin; TONGYong-Sheng; C.clyde, William; L.koch, Paul; MENGJin; Yuan-Qing, Wang; J.bowen, Gabriel (2023-04-03). "ASIAN EARLY PALEOGENE CHRONOLOGY AND MAMMALIAN FAUNAL TURNOVER EVENTS". Vertebrata Palasiatica. 49 (1): 1. ISSN 2096-9899.
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