Microscopic analysis of reptilian osteoderms reveals a high vascularization. In crocodilians, the dorsal osteoderms act as "solar panels." By basking, the beast allows the sun to heat the blood within the bone plates, which is then shunted to the rest of the body to raise the core temperature quickly. Once optimal temperature is reached, blood flow is restricted. Here, the skeleton serves as a thermal battery, storing and releasing solar energy as needed.
However, the sun is also a degrading force. UV radiation breaks down collagen, the protein matrix that gives bone its tensile strength. In paleontological contexts, "skeletons in the sun" refers to the rapid weathering of exposed bones. The cortical bone cracks and splinters under thermal stress as the sun causes the expansion and contraction of mineral matrices. beasts in the sun skeletons
One of the most profound skeletal adaptations to high-solar environments is described by Allen’s Rule. This ecogeographical principle states that animals adapted to hot climates have longer appendages than similar animals adapted to cold climates. Microscopic analysis of reptilian osteoderms reveals a high
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