An animal that has sat dead in a collection since 1836 has finally settled a dispute over what to call one of the most heavily trafficked mammals on the planet.
Scientists pulled DNA directly out of that specimen — the historical type specimen of the Nepalese subspecies — and established that the pangolins of Nepal and Northern India make up a species in their own right: Manis aurita. The results appear in Communications Biology.
The relabeling is the smallest part of the story. What counts is that whoever is left holding a sack of confiscated scales now has a genetic reference to test them against.
"We can’t protect what we do not know, and now that we have confirmed that this other species of pangolin exists, we can use that information to help protect these endangered animals," said Anderson Feijó, co-corresponding author of the study and the Negaunee Assistant Curator of Mammals at the Field Museum.
One animal, two names, and a rulebook
Things began unravelling in 2025. Another group of researchers examined animals that had long been lumped together as the "Chinese pangolin" and decided the label covered two species rather than one. One of them is found chiefly in China. The second keeps to the Himalayan foothills spanning parts of Nepal, India, Bhutan and Myanmar. That group named the mountain-dwelling animal Manis indoburmanica, the Indo-Burmese pangolin.
Taxonomy, though, operates on priority. Where a single species has accumulated several scientific names over time, the oldest valid one takes precedence — however much attention a newer name may have attracted.
Feijó and his colleagues had already spent ten years untangling pangolin evolution, pairing DNA with physical traits to establish how many species exist and how they relate to one another. That effort turned up records of Manis aurita, first described in 1836 before being downgraded to a subspecies of the Chinese pangolin.
"This left us with a core taxonomic riddle: what is the relationship between indoburmanica and aurita? Are they the same species or different species?" said Kai He, a researcher at the South China Biodiversity Research Center at Guangzhou University and another of the paper’s co-corresponding authors. "The ultimate, most thrilling piece of the puzzle came from the Natural History Museum in London. Thanks to their incredible expertise and assistance, the NHM team successfully sequenced the DNA directly from the historical type specimen of the Nepalese subspecies (aurita). This specimen dates back to 1836, making it nearly 190 years old."
What the 1836 specimen revealed
Present-day Himalayan pangolin samples lined up with aurita. In other words, the animals christened M. indoburmanica in 2025 belonged to a species that had carried a name all along — and M. aurita is the valid one.
The distinctions separating the Himalayan pangolin from the Chinese pangolin are genuine, but simple to overlook unless you know what to look for. "Compared to the Chinese pangolin, the Himalayan pangolin has a bigger body, a longer tail, and smaller ears," Feijó said. The resurrected name is a nod to those ears.
Nor do the two occupy the same territory. Their documented ranges do not overlap — and with animals facing poaching on this scale, pinning down which species lives where is more than filing work.
"This finding marks the culmination of more than five years of research that began in Nepal, where we first documented evidence suggesting that Himalayan pangolins represented a distinct evolutionary lineage," said Narayan Koju, the study’s first author and a researcher at the Nepal Engineering College at Pokhara University. "The confirmation of Manis aurita as a valid species demonstrates the importance of long-term research, international collaboration, and museum collections. Most importantly, it provides a strong scientific basis for conservation planning, wildlife forensics, and efforts to protect one of the world’s most trafficked mammals from extinction."
When busts yield scales, not animals
Layers of overlapping keratin scales give pangolins the look of a walking pinecone, and it is those scales that are driving them toward oblivion. Practitioners of traditional Chinese medicine hold the scales to be a potent aphrodisiac, sustaining a sprawling illegal trade.
That leaves enforcement facing a fundamental evidence problem. "In the marketplaces you basically only find pangolin scales, not the whole animals, which makes it hard to know which species are being hunted and where they are coming from," Feijó said.
The genetic work alters what a seizure can reveal. Run the confiscated scales, pin down the species, and it becomes possible to chart which regions are bearing the worst of the poaching — tracing a line from the market back to the population being stripped bare.
"This taxonomic clarification provides a crucial scientific basis for combating illegal poaching and lays the groundwork for protecting this cryptic endangered species," said Yan Hua, a study co-corresponding author and researcher at the Guangdong Academy of Forestry.
The payoff extends to reintroduction efforts. Put the wrong species back into the wrong range and conservation funding has gone toward muddying the picture for everyone who comes later.
"Before, you might have introduced Chinese pangolins into Nepal, because you didn’t know the difference," Feijó said. "By defining the differences between the species and the limits of where each species is found, we can make better conservation decisions."
Rare animals, old drawers
The researchers are candid that none of this would exist without natural history museums. Their collections contain pangolins taken more than a hundred years ago, from populations and locations that are all but unreachable today.
"Using museum collections allows us to have access to more individuals across the species’ range," Feijó said. "If you only rely on fresh material, since the animals are so rare to find in the wild, this greatly limits the information that you can gather. We used collections to have a more complete sampling of the species. It’s a big advantage to have this resource available as a repository of material that we can look back and keep learning from."
Contributors to the study came from Guangzhou University, Nepal Engineering College, Pokhara University, the Chinese Academy of Sciences, University of Washington, the Smithsonian National Museum of Natural History, the University of Sevilla, the Guangdong Academy of Forestry, Tribhuan University, Aspect Ecology Oxfordshire, the Chinese Wildlife Forensic Science Service, Chengdu University of Traditional Chinese Medicine and the Field Museum.
The next consignment of scales stopped on its way out of the Himalayan foothills can now be traced to a named animal in the lab. That capability rests on a specimen gathered in 1836.