New Tool Lets You Trace Where Your Backyard Was 320 Million Years Ago : ScienceAlert

Imagine pointing your phone at your own backyard and seeing it slide across the globe, traveling from the frozen reaches of the poles to the humid tropics over millions of years. This isn’t science fiction. it is the current reality provided by the latest update to Paleolatitude.org. By leveraging the Utrecht Paleogeography Model, this tool allows anyone to track the shifting latitudes of any location on Earth over a span of 320 million years.

From 1D to 3D: The Evolution of Biodiversity Tracking

For decades, paleontologists largely viewed biodiversity through a one-dimensional lens: time. We knew when a species appeared and when it vanished. However, the integration of precise paleogeographic data is transforming this into a three-dimensional understanding that encompasses space and movement.

“With the new model, we have much greater certainty, and our understanding of biodiversity is shifting from one-dimensional – that is, solely over time – to three-dimensional, encompassing space as well,” Emilia Jarochowska, paleontologist at Utrecht University

This spatial dimension is critical for understanding why certain fossils appear in unexpected places. For example, a quarry near Winterswijk in the Netherlands contains fossils from 245 million years ago. While the Netherlands is currently in eastern Europe, the data confirms that these lifeforms lived in a climate more similar to the modern Persian Gulf due to the fact that the landmass was located at a latitude similar to that of modern-day Arabia.

Predicting Modern Resilience Through Deep Time

The ability to map ancient biodiversity gradients offers more than just a history lesson; it provides a blueprint for how life responds to extreme planetary shifts. By analyzing where species migrated or perished during previous warming and cooling cycles, scientists can better predict the resilience of modern biodiversity in the face of current climate change.

Researchers are now focusing on identifying refuges—specific latitudes that remained habitable while others became lethal. By understanding which species adapted and which went extinct during past mass extinctions, we can identify modern-day ecological zones that may serve as critical sanctuaries for endangered species.

The Power of Large Data in Paleontology

The precision of these trends is driven by massive datasets. To demonstrate the tool’s capabilities, researchers analyzed a dataset of around 34,000 Upper Jurassic marine fossils. By winding back the clock, they mapped the exact latitudes where these organisms were deposited at the time of death.

This process involved rigorous statistical adjustments, including bootstrapping and uncertainty calculations, ensuring that the resulting biodiversity gradients are scientifically sound rather than mere approximations. This level of detail allows scientists to visualize the genus-level diversity of the Late Jurassic with unprecedented clarity.

The Next Frontier: The Cambrian Explosion

While 320 million years of data is a staggering achievement, the scientific community is already looking further back. The team behind the Utrecht Paleogeography Model plans to extend the tool’s reach to encompass the Cambrian explosion, which occurred approximately 550 million years ago.

Expanding the timeline to this era will allow researchers to track the very origins of complex animal life and see how the earliest biodiversity gradients formed as the first complex organisms began to colonize the oceans. This will likely reveal new insights into the evolutionary triggers that led to the diversity of life we see today.

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