Fossil Fever: Museum Discoveries, Giant Dinosaurs, and the Promise of Molecular Paleontology

Overview

The Naked Scientists explore how fossil discoveries are increasingly drawn from museum collections, aided by new imaging and molecular techniques. The program features palaeontologists Joe Botting and Lucy Muir alongside updates from dinosaur research and the evolving science of ancient biology.

Key insights

• Old fossils in museum drawers can yield new species when re-examined with fresh questions and methods.
• Imaging technologies such as micro CT and synchrotron imaging reveal internal structures without destructive sampling.
• Researchers are pushing the boundaries of molecular paleontology, investigating preserved proteins and possibly DNA in ancient specimens.
• Recent exhibits and field findings highlight the scale of dinosaurs and the diversity of life in deep time.

Introduction: Fossil Fever and the Naked Scientists

The podcast opens by framing a current surge of paleontological activity driven by renewed interest in fossils, museum collections, and the potential for new scientific clues. The hosts explain that discovery, questions, research, and technology underpin the era of paleontological exploration they call fossil fever. They announce a return visit from Joe Botting and Lucy Muir, a Wales-based couple whose work in palaeontology has captured attention for the past two decades.

Meet the Researchers: Graptolites, Plankton, and Marine Life

Lucy explains her palaeontological passion, while Joe describes his focus on graptolites, a largely extinct group that lived in the ocean. They discuss the sizes of the plankton they study, from a few centimeters to roughly a meter in length, and reflect on the idea that paleontology is a broad field spanning entire ancient communities rather than just single fossils.

The conversation covers how to become a palaeontologist, emphasizing the accessibility of the field: you can start with field exploration and observation, use online resources, and gradually build expertise. They stress the value of seeing rocks and fossils in context and interpreting what those materials reveal about ancient life and environments.

Imaging, Technology, and Old Specimens

The discussion then highlights advances in imaging: micro CT scans for 3D visualization, synchrotron facilities to examine fossils at high resolution, and standard microscopy and electron microscopy. These technologies allow researchers to revisit old fossils with fresh eyes, often uncovering details previously overlooked. The guests emphasize that there is still room for traditional fieldwork, hammering for new specimens, alongside high-tech analysis.

Titanosaur Exhibit: Patagotitan and Scale

James Titko (host) speaks with Paul Barrett from the Natural History Museum about the Titanosaur exhibition, Titanosaur. Barrett describes Patagotitan as one of the contenders for the largest land-dwelling animal, weighing about 57 tons and measuring around 37 meters in length. The comparison to a Diplodocus replica at the museum helps visitors grasp the scale of these giants.

Global Palaeontology: New Species in Museum Collections

The program shifts to a broader look at how researchers are naming new dinosaurs and reassessing old specimens. Adele Pentland from Curtin University discusses Dinosaur Cove discoveries, including pterosaurs—flying reptiles often misidentified as pterodactyls. Two Australian bones—a partial pelvis and a wing bone—are used to estimate wingspan and demonstrate the first juvenile pterosaur from Australia, dating to roughly 107 million years ago.

Neil Gostling from the University of Southampton discusses spinosaurs in Britain, revealing that there were multiple spinosaurs beyond the known Baryonyx. A single tooth and other fossil fragments helped identify a new (unnamed) spinosaur specimen in Britain and highlighted the caution needed before naming new species from isolated remains.

Fossil Trade and Access to Collections

The episode notes a boom in fossil auctions, including a recent sale of a Tyrannosaurus skeleton made from bones of three T. rex individuals for $6.1 million. The scientists discuss the importance of publicly owned or museum collections for describing fossils in peer-reviewed research, as private ownership can limit scientific access and verification.

Molecular Paleontology: Toward DNA from Ancient Life

The program transitions to molecular paleontology, a field that seeks to recover proteins, fats, and potentially DNA from ancient fossils. James Titko explains that early views treated fossils as mineral replicas with little organic fabric remaining. Mary Schweitzer’s landmark 2005 discovery of soft, flexible blood vessels and cells in a Tyrannosaurus bone dramatically shifted paleontology toward examining preserved original tissues. The host recalls that Schweitzer faced skepticism at first, but over time the evidence accumulated in support of preserved soft tissue and biomolecules.

The discussion then covers the feasibility of retrieving dinosaur DNA. While there is ongoing debate about whether DNA can survive tens of millions of years, there have been reports of structures that may be DNA or DNA-associated material in well-preserved fossils. The scientists acknowledge the technical challenges of sequencing such degraded material and the requirement for undisturbed preservation conditions to obtain reliable genetic data.

Closing Reflections

The program closes with a light remark on the enduring allure of science and curiosity, attributed to humor from a renowned physicist, and a final reminder that fossil science benefits from public access to museum collections and the integration of new technologies with traditional fieldwork.