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Temperature-dependent sex determination in dinosaurs? Implications for population dynamics and extinction

Frank V. Paladino, Peter Dodson, Joel K. Hammond and James R. Spotila
Temperature-dependent sex determination in dinosaurs? Implications for population dynamics and extinction (in Paleobiology of the dinosaurs, James O. Farlow (editor))
Special Paper - Geological Society of America (1989) 238: 63-70

Abstract

Temperature during incubation determines sex in turtles, crocodiles, and alligators and may have determined the sex of hatchlings in dinosaurs as well. Geologic evidence indicates that dinosaurs nested in upland sites in western Montana where eggs were exposed to fluctuating and/or lower temperatures as climate deteriorated at the end of the Cretaceous. Production of hatchlings of predominantly one sex, due to environmental shifts in nest incubation temperatures resulting from changing climates, would have altered drastically the population breeding structure and driven these dinosaurs toward extinction.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 238
Title: Temperature-dependent sex determination in dinosaurs? Implications for population dynamics and extinction
Title: Paleobiology of the dinosaurs
Author(s): Paladino, Frank V.Dodson, PeterHammond, Joel K.Spotila, James R.
Author(s): Farlow, James O.editor
Affiliation: Purdue Univ., Dep. Biol. Sci., Fort Wayne, IN, United States
Affiliation: Indiana Univ.-Purdue Univ. at Fort Wayne, Dep. Earth and Space Sci., Fort Wayne, IN, United States
Pages: 63-70
Published: 1989
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2238-1
References: 85
Accession Number: 1989-073311
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N44°30'00" - N49°00'00", W116°01'60" - W104°01'60"
Secondary Affiliation: Univ. Pa., USA, United StatesBIOSIS, USA, United StatesDrexel Univ., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Bibliography of Fossil Vertebrates, Society of Vertebrate Paleontology, Berkeley, CA, United States
Update Code: 1989
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