Early Jurassic origin of avian endothermy and thermophysiological diversity in Dinosauria DOI Open Access
Alfio Alessandro Chiarenza, Juan L. Cantalapiedra, Lewis A. Jones

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Дек. 23, 2023

Abstract A fundamental question in dinosaur evolution is how they adapted to substantial long-term shifts Earth System during the Mesozoic and when developed environmentally independent, avian-style acclimatization due of an endothermic physiology. Combining fossil occurrences with macroevolutionary paleoclimatic models, we unveil distinct evolutionary pathways main lineages: ornithischians theropods diversified across broader climatic landscapes, trending toward cooler niches. An Early Jurassic shift colder climates Theropoda suggests early adoption thermophysiology. Conversely, sauropodomorphs exhibited prolonged conservatism associated higher thermal conditions. Paleo-biome mapping emphasizes temperature, rather than plant productivity, as primary driver this pattern, suggesting poikilothermic physiology a stronger dependence on temperatures sauropods since Jurassic. One-Sentence Summary Dinosaur reveals endothermy emergence theropods, but heterotherm sauropodomorphs.

Язык: Английский

Early Jurassic origin of avian endothermy and thermophysiological diversity in Dinosauria DOI Open Access
Alfio Alessandro Chiarenza, Juan L. Cantalapiedra, Lewis A. Jones

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Дек. 23, 2023

Abstract A fundamental question in dinosaur evolution is how they adapted to substantial long-term shifts Earth System during the Mesozoic and when developed environmentally independent, avian-style acclimatization due of an endothermic physiology. Combining fossil occurrences with macroevolutionary paleoclimatic models, we unveil distinct evolutionary pathways main lineages: ornithischians theropods diversified across broader climatic landscapes, trending toward cooler niches. An Early Jurassic shift colder climates Theropoda suggests early adoption thermophysiology. Conversely, sauropodomorphs exhibited prolonged conservatism associated higher thermal conditions. Paleo-biome mapping emphasizes temperature, rather than plant productivity, as primary driver this pattern, suggesting poikilothermic physiology a stronger dependence on temperatures sauropods since Jurassic. One-Sentence Summary Dinosaur reveals endothermy emergence theropods, but heterotherm sauropodomorphs.

Язык: Английский

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