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PODCAST

The Fossil Files

Robert Sansom and Susannah Maidment

In "The Fossil Files", a pair of palaeontologists delve into the latest discoveries from the world of palaeontology and seek to bring fossils to back to life. Each episode, Susie and Rob will discuss an interesting new research paper ranging from topics of what dinosaurs ate, how plesiosaurs swam, where we came from, and the science of de-extinction. Whilst doing so, we peek under the hood of how the science of palaeontology is done and how research gets to see the light of day. It is for anybody

science earth sciences

All Episodes

36:31

Cretaceous zombie ants

The Fossil Files ·

2025/10/21

Cordyceps is a weird fungus that can take over the brain of ants and spiders causing them to go zombie and commit suicide in order to spread disease. Weirder still, some new fossils from the Cretaceous have directly captured this nightmarish behaviour for the first time. We take a look at these interesting fossils, their potentially shady origin story, and their implications for reconstructing evolution of this unsual parasitic behaviour. Side-note: did fungus cause the extinction of dinosaurs? The

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44:00

Fossil Fails: The tiny dino with a massive flaw

The Fossil Files ·

2025/10/07

Discovery of the smallest ever dinosaur acheived quite a splash when it was publised on the front cover of Nature in 2020. The new critter, Oculodentavis, was the size of a hummingbird and reconstructed as close to Archaeopteryx on the lineage to birds. In this episode, Susie and Rob take a look at how this story quickly started to unravel as it turned out Oculodentavis might been something else altogether. This how episode also shed some light on a dark underbelly of an ethical problem for

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33:20

Fossil Fails part 1: Bees!

The Fossil Files ·

2025/09/23

In the first of two episodes on notorious fossil fails, Rob and Susie take a look at how a serious case of mistaken identify unfolded for some Ediacaran 'fossils'. Herein lies a cautionary tail for all relating to pareidolia: our very human tendancy to perceive patterns in random shapes and lines, or why we might see jesus is a piece of toast or a smiley face in a cut pepper. This takes us to unexpected destination for hunting for dinosaur fossils: the moon! Image 1: A look at some 'Ediacaran

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32:21

The Spicomellus Special

The Fossil Files ·

2025/09/08

Perhaps the weirdest dinosaur ever has just been described in Nature, by The Fossil Files' own Susie Maidment. In a worldwide EXCLUSIVE*, Susie gives as the unvarnshed truth about how this spikey Jurassic weirdo came to be found, what makes it different, and peek under the hood as to how palaeontological research like this is conducted. The story weaves in the local and scientific communities in Morroco, funding crises, a global pandemic, dodgy fossil collectors, international law, and a lot of hard

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45:45

Mirasaura, Triassic Punk

The Fossil Files ·

2025/09/02

This new discovery is WEIRD. Mirasaura (the 'marvellous lizard') has been described from the Triassic of France, and it has mad projections coming out of its back, far longer than its body. We take a look at what these projections were, and were not (i.e. not feathers), their implications for the evolution of integumentary structures, and our own historically bad haircuts. The paper is "Triassic diapsid shows early diversification of skin appendages in reptiles" by Stephan Spiekman and colleagues,

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12:47

SQUID! (bonus episode)

The Fossil Files ·

2025/08/25

Squid are a really important part of marine ecosystems, but their fossil record is close to non-existent - their squishy bodies are just really unlikely to be fossilised. In this short bonus episode we take a new look at the squid fossil record. 'Digital fossil mining' reveals a massive diversity of squid in Creataceous oceans. How did the scientists do it and what does this mean? The paper is "Origin and radiation of squids revealed by digital fossil-mining" by Shin Ikegami and colleagues of

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31:13

Our deep origins and the vertebrate that wasn't

The Fossil Files ·

2025/08/19

The origin of our own group, the vertebrates, has received quite the shake up. One of the important fossil players has been found to be an invertebrate imposter, and this completely changes our understanding of this evolutionary episode. We take a look at why and when, and how this boils to down to a interesting question all about teeth. Did our entire skeleton come from teeth on the outside of our bodies, even before jaws existed? Is this why we now get tooth ache? The paper is "The origin of

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43:00

Where did Pterosaurs come from?

The Fossil Files ·

2025/08/05

Pterosaurs dominated Mesozoic skies but it has always been a mystery where these flying reptiles came from. This week Susie and Rob discuss Pterosaur controveries and a cool new study that attempts to solve the problem of where and how they originated. How can you do this? By looking at the climate and locations of where pterosaurs lived and their closest relatives - the weird looking lagerpetids -, we can make predictions about how pterosaurs lived, thrived, and died. And maybe even where we should

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40:08

Were Neanderthals the first fossil collectors?

The Fossil Files ·

2025/07/22

Why do we collect fossils and who were the first fossil collectors? Cretaceious fossils have been found in a cave in Northern Spain alongside the Neanderthals that were living there 46,000 years ago. Were Neanderthals collecting fossils and if so why? This week Susie and Rob examine those claims and discuss fossil collecting and the recent surge in private trade in dinosaur fossils. Because we are children, we also giggle at possibly one of the earliest fossils collected, the Erfoud Manuport as

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34:35

Walking with… our Carboniferous ancestors in the rain

The Fossil Files ·

2025/07/09

Our evolutionary timeline just leapt back an additional 40 million years into the past. Some new fossil trackways from the early Carboniferous of Australia have been interpreted as the first bone-fide "amniotes". This is the group of egg laying vertebrates which we belong to along, with all the other mammals, birds, and reptiles. These fossils are much earlier than previously thought possible and potentially turns our understanding of this event on its head. We take a look at these fossils and the

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38:24

Is de-extinction a scam?

The Fossil Files ·

2025/07/01

Can we bring extinct organisms back to life? Colossal Biosciences caused quite the stir earlier this year when claimed they could do just that, and indeed have done with Dire Wolves - an extinct species of candid from North America. What is going on here? We sense check those claims and ask what they did (and did not do) as well as the broader implications of the science (pseudoscience?) of de-extinction. The front cover of "Time" magazine - no ambiguity here about what they are saying. Here is

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32:41

Fossil poos from Poland

The Fossil Files ·

2025/06/24

How did dinosaurs rise to supremacy? This difficult question is given "fresh" insights from new data from a motherload of fossils from Poland. Over 500 bromalites - fossil vomit, gut contents or poo - were analysed with new technology allowing reconstruction of how diets and ecosystems changed over this crucial time. We take a look at some of these fossils and interpretations and speculate about how to experimentally test these smelly findings. Figure 2: A selection of fossils found inside the

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37:19

How does your plesiosaur swim?

The Fossil Files ·

2025/06/13

For our first paper, we look at some exceptional preservation of soft tissue in Jurassic plesiosaur (large marine reptiles). Detailed preservation of soft tissues to the sub-cellular level is very rare in the fossil record. We discuss this specific example from Germany (which we name Nigel) and the types of analyses that the authors did of its skin and tissues. This new data helps us reconstruct how plesiosaurs may have lived and moved. Or does it? In this figure from the paper we can see the whole

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04:04

Introducing the Fossil Files

The Fossil Files ·

2025/06/13

In “The Fossil Files”, a pair of palaeontologists delve into the latest discoveries from the world of palaeontology and seek to bring fossils to back to life. Each episode, Susie and Rob will discuss an interesting new research paper ranging from topics of what dinosaurs ate, how plesiosaurs swam, where we came from, and the science of de-extinction. Whilst doing so, we peek under the hood of how the science of palaeontology is done and how research gets to see the light of day. It is accessible

en

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