06/23/2026
A remarkable window into ancient life has been opened in one of the most unusual ways possible.
Through fossilised stomach contents preserved as what scientists call a regurgitalite. Or fossil vomit.
From this rare form of preservation, researchers have identified remains of a pterosaur species named Bakiribu waridza. Offering a striking glimpse into the complex food webs of the Mesozoic world. Discoveries like this are exceptionally rare because digestion usually destroys bones before they can be fossilised. Each find is a valuable piece of ecological evidence.
Here is some context.
Pterosaurs were flying reptiles that lived alongside dinosaurs. Dominating the skies from the late Triassic through the end of the Cretaceous period. They were not dinosaurs themselves, but close relatives within the broader group of archosaurs.
The identification of Bakiribu waridza from regurgitated material suggests it may have been part of a predator-prey interaction. A much larger carnivorous species consumed it. Then later expelled the indigestible remains. This type of fossil preservation provides direct evidence of feeding behaviour. Something rarely captured in the fossil record.
What makes this discovery scientifically important is not just the identification of a new species. It is the context in which it was found.
Regurgitalites preserve partial remains of prey species in a concentrated form. Allowing palaeontologists to reconstruct interactions between predators and their diets. This can help clarify which animals occupied top predator roles and how energy moved through ancient ecosystems. In the case of pterosaurs, it also contributes to understanding their vulnerability, flight capabilities, and ecological niches.
The naming of Bakiribu waridza adds another piece to the growing diversity of known pterosaur species. Which ranged from small insect-eaters to massive soaring forms with wingspans comparable to small aircraft. Each new discovery helps refine the evolutionary story of these flying reptiles and their eventual extinction at the end of the Cretaceous period.
Think about that. A fossilised vomit. Millions of years old. And it just helped name a new species.
Strange but true: Fossilised vomit can preserve multiple prey species in a single deposit. That means one ancient meal, one moment of sickness, can reveal an entire snapshot of an ecosystem frozen in deep time. A predator's bad day is a paleontologist's jackpot.