What was the wingspan of Meganeura monyi?

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Prepare for the Comprehensive Entomology Exam with detailed quizzes on Morphology, Behavior, Evolution, and Pest Management. Dive into multiple-choice questions with solutions and explanations to boost your understanding. Get ready to ace your entomology test!

Multiple Choice

What was the wingspan of Meganeura monyi?

Explanation:
Meganeura monyi was a giant dragonfly-like insect from the Carboniferous, with a wingspan measured from fossil impressions that falls in the roughly 60 to 75 centimeter range. That converts to about two to three feet, which is why this option is the best fit. Modern dragonflies are much smaller, typically under a foot across, so Meganeura represents a remarkable increase in size. The large estimate is tied to the higher atmospheric oxygen of that era, which could support larger bodies and longer wings, enabling such gigantism. The smaller ranges don’t align with the fossil-based size estimate, while a wingspan of four to five feet would be much larger than the available evidence.

Meganeura monyi was a giant dragonfly-like insect from the Carboniferous, with a wingspan measured from fossil impressions that falls in the roughly 60 to 75 centimeter range. That converts to about two to three feet, which is why this option is the best fit. Modern dragonflies are much smaller, typically under a foot across, so Meganeura represents a remarkable increase in size. The large estimate is tied to the higher atmospheric oxygen of that era, which could support larger bodies and longer wings, enabling such gigantism. The smaller ranges don’t align with the fossil-based size estimate, while a wingspan of four to five feet would be much larger than the available evidence.

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