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Bergmanns Rule

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science1 year ago•2 min saved

"Dinosaurs Defy Scientific Rules: New Study Reveals Surprising Findings"

A new study led by scientists at the University of Alaska Fairbanks and the University of Reading challenges Bergmann's rule, an 1800s-era scientific principle stating that animals in high-latitude, cooler climates tend to be larger than close relatives living in warmer climates. The study, which examined data from the fossil record, found that Bergmann's rule is not applicable to a subset of homeothermic animals and is the exception rather than the rule. The researchers also evaluated modern mammals and birds, concluding that latitude was not a predictor of body size in these species. This study highlights the importance of using the fossil record to test current-day scientific rules and hypotheses.

via SciTechDaily|

#bergmanns-rule #dinosaurs #evolution

science1 year ago•2 min saved

"Dinosaurs Defy Long-Standing Scientific Rules in Body Size Evolution"

A new study from the University of Alaska Fairbanks and the University of Reading has found that Bergmann's Rule, a 150-year-old principle correlating an animal's body size to their external environment, may not apply to dinosaurs and mammals as previously thought. The research, published in Nature Communications, challenges the long-held belief by analyzing the fossil records of prehistoric animals and finding that body size evolution cannot be solely attributed to latitude or temperature. The study emphasizes the importance of using the fossil record to test current scientific rules and hypotheses, providing valuable insights into past ecosystems and climate conditions.

via Newsweek|

#bergmanns-rule #climate #dinosaurs

science1 year ago•2 min saved

"Dinosaur Research Refutes Bergmann's Rule"

A new study led by scientists at the University of Alaska Fairbanks and the University of Reading challenges Bergmann's rule, which suggests that animals in cooler climates tend to be larger. The study, which included data from the fossil record of dinosaurs and modern mammals and birds, found that latitude was not a predictor of body size in these species. The researchers argue that scientific rules should apply to fossil organisms in the same way they do modern organisms, emphasizing the importance of understanding evolutionary roots to comprehend modern ecosystems.

via Phys.org|

#bergmanns-rule #dinosaurs #evolution

science2 years ago•4 min saved

Decoding Earth's Extraordinary Animal Forms: 7 Essential Rules

Scientists have established seven rules that explain the extreme shapes and sizes of animals. Bergmann's rule states that animals evolve to be larger in colder climates, while Allen's rule states that animals in colder climates have smaller appendages. The square-cube law imposes a limit on how big animals can get. The island rule suggests that animals on islands tend to evolve into giant or dwarf versions of their mainland relatives. Island birds evolve toward flightlessness, and deep-sea gigantism occurs in invertebrate animals. Rensch's rule describes a trend in sexual dimorphism.

via Livescience.com|

#animal-shapes #bergmanns-rule #evolution