What is a 380-million-year-old ‘squid’ doing in Leuven station?
KU Leuven geologist Robert Speijer has identified a roughly 380-million-year-old orthoconic cephalopod fossil in the stone floor of Leuven railway station, surrounded by fragments of crinoids and other marine organisms.
The find makes Belgium’s deep geological history tangible in an everyday public place. It also demonstrates how natural stone in buildings can preserve scientifically and culturally valuable traces of ecosystems that existed long before Belgium, Europe or the present continents.
geologist has identified a roughly 380-million-year-old cephalopod fossil in the floor of , turning one of ’s busiest transport spaces into an accidental window on a vanished tropical sea. The specimen remains embedded near a cement joint in the station’s ticket hall and is not reported to be endangered. It is visible to anyone who knows where to look.
The fossil matters locally because it hides in plain sight beneath commuters, students, railway employees and international visitors arriving in . ’s An Olaerts reported that the pointed shell belongs to an orthoconic cephalopod, an extinct relative of modern squid, cuttlefish and the still-living nautilus. Speijer, a professor in ’s Department of Earth and Environmental Sciences, estimates its age at about 380 million years.
The creature lived during the Devonian period, when the geography and climate bore little resemblance to today’s . According to Speijer’s explanation, the sea in which it lived lay near the equator and existed before the modern continents assumed their present positions. Sediments and the hard remains of marine animals accumulated on the seabed, were compressed into limestone and later became part of the geological landscape.
The station floor therefore contains more than one recognisable animal. Speijer describes a crowded field of pale circles, curls and broken structures, many of them pieces of crinoids. Despite their Dutch name, zeelelies, or “sea lilies”, crinoids are animals related to starfish and sea urchins. Their soft tissue disappeared, while parts of their calcite skeletons survived as fossils.
The independently documents crinoid-rich and reefal Devonian limestone around Wellin, on the southern margin of the Dinant geological basin. That research supports the broader geological setting: substantial parts of southern preserve rocks formed in warm, shallow marine environments hundreds of millions of years ago. It does not, by itself, establish the precise quarry from which the floor tile came.
A city-fossil guide published several years before the latest report had already highlighted an orthoconic cephalopod in the station hall. That guide described the reddish material as reef limestone dating from roughly 375 million years ago. The university also confirms Speijer’s credentials as a professor of geology whose research includes extinction, ecosystem recovery and past climate change.
There are two useful ways of looking at the discovery. Speijer’s geological perspective treats the station floor as a slice through deep time: stone used as an ordinary building material can preserve evidence of ancient ecosystems and planetary change. The railway perspective is more immediate. A mobility guide interviewed by initially had not noticed the fossil, illustrating how functional spaces train people to watch signs, departures and delays rather than the ground beneath them.
That contrast became especially sharp when police separately marked a subsidence in the road at the station pending repairs. Local reporting says the depression created a difference in road level, but no repair date was announced. The road defect and the fossil are unrelated: one is a present-day infrastructure problem outside the station, while the other is a natural inclusion in an old stone floor indoors. Conflating them would turn a geological curiosity into a false safety story.
The station building itself is protected heritage. The Flemish immovable-heritage inventory dates the present structure to 1876–1879 and records its later protection as a monument. The fossil-bearing floor consequently sits at the intersection of natural history, Belgian stoneworking and railway heritage, although the available sources do not establish when this particular tile was installed.
No special preservation programme or new visitor signage has been announced by , the City of or the Flemish heritage authorities. For now, the fossil remains where it has spent its railway life: enclosed in a meadow of petrified crinoid fragments while passengers hurry overhead. The next questions are whether its stone can be traced to a particular quarry and whether Leuven or NMBS will formally identify it for travellers without obstructing a working station.
Impact
Regional — The fossil adds an informal geological landmark to Leuven’s protected railway station and could support local science communication, heritage interpretation and educational walks.
Local — The discovery gives Leuven a freely visible geological landmark inside its protected railway station. Passengers can look for the fossil in the ticket hall floor near a cement joint, without entering a museum or travelling to a geological site. For KU Leuven, schools and local heritage groups, the floor provides a practical stop for science communication or educational walks linking geology, architecture and railway heritage. The marked road subsidence outside the station should not be mistaken for part of the fossil story.
What it means for you
Travellers passing through Leuven can view the fossil at no stated cost in the station’s ticket hall by checking the stone floor near a cement joint. It is part of the installed limestone, so visitors should observe it in place rather than touch, mark or attempt to remove anything. No timetable change, fare impact or passenger action is associated with the find. If you see separate safety markings around the road subsidence outside the station, follow the local signage: that issue is unrelated to the fossil.
Opposing perspectives
- KU Leuven geological perspective
Robert Speijer presents the floor as a readable section of an ancient seabed. In this framing, the orthoconic cephalopod and surrounding crinoid fragments reveal planetary movement, extinct ecosystems and the enormous timescale of biological recovery after environmental crises.
- Everyday railway perspective
The NMBS mobility guide encountered in De Standaard’s report had not previously noticed the fossil, even with experience in the tile trade. This practical viewpoint reflects how station users primarily read the space through trains, accessibility, signs and delays rather than natural history.
Who, where and what
Key people, places and terms in this story
Flemish city where the fossil-bearing railway station is located.
Country whose geological history is illustrated by the station stone.
Present-day continent invoked to contrast modern geography with the fossil’s deep age.
KU Leuven geology professor who identified and interpreted the fossil.
Protected railway station whose ticket-hall floor contains the fossil.
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KU Leuven geology professor who identified and interpreted the fossil.
Flemish city where the fossil-bearing railway station is located.
Protected railway station whose ticket-hall floor contains the fossil.
Country whose geological history is illustrated by the station stone.
Present-day continent invoked to contrast modern geography with the fossil’s deep age.
Region identified as the source of the fossil-rich Devonian limestone.
University associated with Speijer and the earlier geological guide to the station stone.
Belgian railway operator associated with Leuven station.
Belgian newspaper reporting Speijer’s interpretation of the fossil.
Belgian newspaper reporting on the fossil in Leuven station.
Geological institution providing relevant background material on Belgian stone and fossils.
Official inventory documenting Leuven railway station’s heritage status.
Local outlet reporting the unrelated road subsidence outside the station.
Sources & evidence
- View sourceDe StandaardPrimaryprimary· standaard.be· 21 August 2026Retrieved 25 August 2026· 42 days ago· Dated
- View sourceHet Nieuwsbladcorroborating· nieuwsblad.be· 21 August 2026Retrieved 25 August 2026· 42 days ago· Dated
- View sourceKU Leuven geologyofficial· ees.kuleuven.be· 31 August 2021Retrieved 25 August 2026· 1858 days ago· Dated
- View sourceKU Leuven Who’s Who: Robert Speijerofficial· kuleuven.beRetrieved 25 August 2026
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This briefing was prepared with AI assistance and reviewed by a Belgium Impulse editor before publication. methodology.