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cover of episode Sex Lives of Dinosaurs
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David Hone
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Kate Lister: 我很好奇恐龙是如何进行性行为的,特别是考虑到它们巨大的体型和独特的身体结构。例如,霸王龙的小短手是如何帮助或阻碍它们的性生活的?它们是如何克服厚重的盔甲进行交配的?它们是一夫一妻制吗? David Hone: 恐龙的性行为是一个复杂的问题,因为我们对恐龙的软组织知之甚少。我们知道恐龙几乎肯定进行过有性繁殖,因为它们存在了1.8亿年,并且进化出了数以万计的物种。由于恐龙属于羊膜动物,因此它们进行体内受精。然而,不同恐龙的体型和身体结构对交配方式提出了不同的挑战。例如,大型蜥脚类恐龙、霸王龙和甲龙的交配方式可能各不相同。一些恐龙可能拥有非常长的阴茎来克服交配的物理障碍。我们很难找到恐龙的生殖器官化石,因为它们是软组织,不易保存。我们通常依靠骨骼相关性来推断软组织结构,但恐龙的生殖器官化石很难找到。我们对恐龙交配方式的了解主要基于推断和对现有证据的分析。恐龙的交配方式可能包括体内受精,但我们无法排除其他可能性,例如泄殖腔之吻。我们可以通过对恐龙骨骼的重建和分析来推断它们可能的交配姿势。霸王龙的小短手不太可能在交配中起到辅助作用。恐龙的交配姿势可能多种多样,并不一定需要直立。许多恐龙可能进行泄殖腔之吻,而不是真正的性交。我们有一些证据表明某些恐龙存在交配仪式,例如通过足迹化石。某些恐龙的足迹化石显示了可能的交配仪式,类似于某些现代鸟类的行为。现代某些鸟类的交配行为与恐龙足迹化石中的模式相似,支持了交配仪式的推测。三角龙等恐龙身上的装饰物可能与交配仪式有关。许多恐龙的装饰物在性成熟后生长速度加快,这表明它们可能与性选择有关。恐龙没有阴道,而是泄殖腔。恐龙的泄殖腔与哺乳动物的阴道在结构和功能上存在差异,因此不应将其称为阴道。恐龙可能并非一夫一妻制,因为即使是一夫一妻制的动物也经常有婚外行为。许多恐龙的雄性和雌性都具有相似的装饰物,这表明它们可能存在相互性选择,并且雄性和雌性都参与育儿。我们目前不知道恐龙是否会体验性高潮。性高潮可能主要存在于哺乳动物中,我们目前对恐龙是否会体验性高潮知之甚少。

Deep Dive

Chapters
This chapter explores the challenges and possibilities of dinosaur sex, considering their diverse body types and sizes. It delves into the physical mechanics of copulation, the potential for a large penis to overcome anatomical obstacles, and the limitations of fossilized remains in providing definitive answers.
  • Internal fertilization in amniotes.
  • Challenges in copulation for large or armored dinosaurs.
  • Possible role of a long penis.
  • Limitations of fossilized evidence in determining sexual practices.

Shownotes Transcript

What's the dinosaur equivalent of Netflix and chill? Were they capable of flirting?

In today's episode, Kate speaks with Dr. David Hone, author of Uncovering Dinosaur Behaviour: What They Did And How We Know), to find out more about how different dinosaurs might have had sex.

Could the T-Rex's little arms aid their sexual performance? How did they penetrate through so much heavy protective armour? And were they monogamous?

This episode was edited and produced by Stuart Beckwith. The senior producer was Charlotte Long.

All music from Epidemic Sounds/All3 Media.

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Betwixt the Sheets: History of Sex, Scandal & Society is a History Hit podcast.