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cover of episode A new oldest dinosaur from the Northern hemisphere

A new oldest dinosaur from the Northern hemisphere

2025/3/20
logo of podcast I Know Dino: The Big Dinosaur Podcast

I Know Dino: The Big Dinosaur Podcast
AI Deep Dive AI Chapters Transcript
Topics
Garrett: 我们长期以来认为恐龙起源于冈瓦纳古陆（南半球），然后才扩散到劳亚古陆（北半球）。但一项新的研究发现了一种生活在2.3亿年前的蜥脚形亚目恐龙化石，这比之前发现的最古老的北半球恐龙还要早大约1000万年。这意味着恐龙在北半球的出现时间比我们之前认为的要早得多，并且它们比我们想象的更早就在全球范围内繁盛起来。这项发现与我们即将出版的《I Know Dino!》一书的主题相契合，该书探讨了200年来人们对恐龙认知的演变。 Sabrina: 除了骨骼化石外，研究团队还在杰尔姆恐龙足迹遗址发现了更古老的足迹化石，这进一步支持了恐龙在北半球早期出现的观点。这些足迹可能属于早期的鸟臀类恐龙或兽脚类恐龙。这些发现表明，在距今2.3亿年前的三叠纪晚期，恐龙就已经在全球范围内广泛分布。 Sabrina: 这种新发现的恐龙被命名为阿瓦图姆·邦杜维奇（Ahvaytum bonduivici），其正模标本包括一块孤立的左距骨和一部分左股骨。根据骨骼特征，研究人员推断它是一种体型较小的蜥脚形亚目恐龙，大小相当于一只鸡，可能是一种杂食性动物。它的发现不仅刷新了北美最古老恐龙的记录，也为我们理解恐龙的早期演化和全球分布提供了新的视角。 Garrett: 这项研究还发现了一种未定名的普氏龙科恐龙化石，这进一步丰富了我们对三叠纪晚期北美恐龙群落的认识。这些发现挑战了我们之前关于恐龙起源和早期分布的假设，表明恐龙的成功可能比我们想象的要早得多，也更广泛。

Deep Dive

Chapters
This episode explores the evolution of our understanding of dinosaurs over the last two centuries, coinciding with the release of the authors' book, "I Know Dino!" The episode will cover various aspects, from dinosaur discoveries to the Dino Duels competition.
  • The authors' book, "I Know Dino!" covers the evolution of our understanding of dinosaurs over 200 years.
  • The episode includes a sneak peek of the book's content.
  • The Dino Duels competition results are discussed.

Shownotes Transcript

The sauropodomorph Ahvaytum is several million years older than any previously known dinosaur from Laurasia. And there are some even older tracks. Plus the results of the sweet sixteen round of our dino duels bracket.

For links to every news story, links to our new book, and our fun fact check out https://iknowdino.com/200_years_of_dinosaurs-Episode-531/)

Join us at www.patreon.com/iknowdino) for dinosaur requests, bonus content, ad-free episodes, and more.

200 years of dinosaurs*, *our book titled I Know Dino! will be published soon with National Geographic Kids! Pre-order your copy at https://bit.ly/ikdbook2025) if you tell us you ordered it at https://bit.ly/iorderedthebook) we'll send you an addendum with a dozen more dinosaurs we had to cut from the book.

In dinosaur news this week:

  • A new sauropodomorph shows that dinosaurs were living in the northern hemisphere way earlier than previously thought

 

This episode is brought to you by the Colorado Northwestern Community College. Join them) for two weeks digging up dinosaur bones from the Jurassic Period in Northwest Colorado this summer. For details go to CNCC.edu/dinodig)

See Privacy Policy at https://art19.com/privacy) and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info).