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- biostratigraphy and geochronology. New York: Columbia university press. ISBN 978-0231130400. Bell, Christopher J; Lundelius Jr, Ernest L; Barnosky, Anthony D; Graham...16 KB (1,827 words) - 19:06, 6 August 2024
Mammals of North America: 169–231. doi:10.7312/wood13040-008. ISBN 9780231130400. Hulbert, Richard C. Jr. (2 August 2016). "Hemphillian North American...54 KB (5,894 words) - 02:19, 4 September 2024
