The first vertebrates of the dinosaur age in Mozambique
Nas rochas de Moçambique, uma equipa de investigadores liderada pelo paleontólogo português Ricardo Araújo encontrou os fósseis de vertebrados mais antigos alguma vez descobertos no país — criaturas de 245 milhões de anos que sobreviveram à maior extinção em massa da história da Terra. A descoberta, publicada na revista científica Palaeontologia Africana, insere Moçambique no mapa global da paleontologia e convida a humanidade a reler, em pedra africana, os capítulos mais remotos da vida no nosso planeta.
- Até esta descoberta, Moçambique era um espaço em branco no registo fóssil de vertebrados do início da era dos dinossauros — um silêncio científico de 245 milhões de anos que uma única expedição veio quebrar.
- Os fósseis de Lystrosaurus foram encontrados em rochas que guardam as marcas geológicas do evento de extinção Pérmico-Triásico, o cataclismo que eliminou 95% das espécies da Terra, tornando cada fragmento de osso uma testemunha de sobrevivência improvável.
- A equipa internacional — com cientistas portugueses, americanos, britânicos e moçambicanos — percorreu o terreno entre setembro e outubro de 2019, recolhendo crânios parciais e esqueletos fragmentados que foram depois submetidos a revisão científica rigorosa.
- A publicação em revista peer-reviewed transforma o achado de campo em facto científico permanente, conferindo a Moçambique um lugar legítimo na investigação sobre como a vida se reconstituiu após a maior extinção da sua história.
- O paleontólogo Ricardo Araújo avança que depósitos mais ricos poderão existir no subsolo moçambicano, abrindo a perspetiva concreta de que fósseis de dinossauros venham a ser descobertos em futuras escavações.
Nas rochas de Moçambique, cientistas encontraram os vertebrados mais antigos alguma vez descobertos no país — animais que viveram há 245 milhões de anos, quando os primeiros dinossauros começavam a surgir na Terra. Os fósseis, descritos na revista Palaeontologia Africana, representam um momento de viragem na compreensão da história profunda da vida no continente africano.
A descoberta resultou de uma expedição realizada entre setembro e outubro de 2019, durante a qual uma equipa de oito investigadores encontrou vários crânios parciais e esqueletos fragmentados de Lystrosaurus, um réptil com características de mamífero que prosperou no período Triásico. Ricardo Araújo, paleontólogo português do Instituto Superior Técnico, liderou os trabalhos e explicou que, até então, não existia qualquer registo de fósseis de vertebrados desta era em Moçambique.
O que torna a descoberta ainda mais significativa é o contexto geológico: as rochas onde estes animais ficaram preservados carregam as marcas do evento de extinção Pérmico-Triásico, o mais devastador da história da Terra, no qual 95% das espécies desapareceram. Os Lystrosaurus sobreviveram a esse apocalipse, e os seus fósseis colocam agora Moçambique no centro do debate científico sobre como a vida se recuperou da quase-extinção total.
A equipa era de composição internacional, reunindo paleontólogos americanos de Boise State University e do Field Museum de Chicago, investigadores britânicos ligados à Universidade de Witwatersrand e ao Chipembele Wildlife Education Centre, e cientistas moçambicanos do Museu Nacional de Geologia e da Universidade Eduardo Mondlane. Em África, fósseis de Lystrosaurus eram conhecidos sobretudo na África do Sul, pelo que a descoberta representa também uma expansão geográfica do alcance conhecido desta espécie.
Araújo sublinhou que estes achados abrem uma porta: Moçambique entra agora no mapa da investigação paleontológica como um lugar onde os primeiros capítulos da era dos dinossauros podem ser lidos na pedra. A presença destes vertebrados antigos sugere que depósitos mais ricos poderão existir no subsolo, à espera de futuras expedições — e que fósseis de dinossauros poderão ser os próximos a emergir.
In the rocks of Mozambique, scientists have found the oldest vertebrate animals ever discovered in the country—creatures that lived 245 million years ago, when the first dinosaurs were just beginning to walk the earth. The fossils, formally described in a peer-reviewed study published Friday in the South African journal Palaeontologia Africana, represent a threshold moment in understanding the deep history of life on the African continent.
The discovery came during an expedition between September and October of 2019, when a team of eight researchers uncovered several partial skulls and fragmented skeletons of Lystrosaurus, a dicynodont—a mammal-like reptile that thrived in the Triassic period. Ricardo Araújo, a Portuguese paleontologist at the Institute of Plasmas and Nuclear Fusion at the Higher Technical Institute, led the work. He explained to the Portuguese news agency Lusa that until now, not a single vertebrate fossil from this era had been known to exist in Mozambique. The new finds change that entirely.
What makes this discovery significant extends beyond the mere fact of finding old bones. The rocks where these creatures were entombed carry geological signatures of catastrophe—evidence of the Permian-Triassic extinction event, the most severe mass die-off in Earth's history. Roughly 245 million years ago, at the boundary between two geological periods, ninety-five percent of all living species on the planet vanished. The ancestors of mammals, including the Lystrosaurus specimens now in Mozambique's scientific record, survived that apocalypse. The fossils thus place Mozambique squarely within the global conversation about how life recovered from near-total annihilation.
Araújo emphasized that these findings open a door. Mozambique, he said, now enters the map of paleontological research—not as a footnote, but as a place where the earliest chapters of the dinosaur age can be read in stone. The presence of these ancient vertebrates suggests that richer deposits may lie beneath the soil, waiting for future expeditions. Dinosaur fossils, he indicated, are likely to follow.
The research team was international in scope. Alongside Araújo were American paleontologists James Crowley from Boise State University and Kenneth Angielczyk from the Chicago Field Museum, British researchers Roger Smith from the University of the Witwatersrand in South Africa and Stephen Tolan from the Chipembele Wildlife Education Centre in Zambia, and Mozambican scientists Dino Milisse from the National Museum of Geology and João Mugabe from Eduardo Mondlane University. In Africa, Lystrosaurus fossils have been known primarily from South Africa, making the Mozambique discovery a geographic expansion of the known range of these creatures.
The validation of the discovery through peer review marks the transition from field finding to scientific fact. The specimens have been examined, measured, compared to known examples, and deemed worthy of publication in a respected journal. What was once rock in the ground is now part of the permanent record of life's history. For Mozambique, a country whose paleontological heritage had remained largely unstudied, the moment represents both an arrival and a beginning.
Citas Notables
We had no single vertebrate fossil from that time in Mozambique, and now we have the first vertebrates from the beginning of the dinosaur age.— Ricardo Araújo, lead researcher
These findings will open the window to discovering dinosaurs in Mozambique.— Ricardo Araújo
La Conversación del Hearth Otra perspectiva de la historia
Why does finding these particular creatures matter so much? They're not dinosaurs themselves.
They're the world into which dinosaurs were born. These Lystrosaurus lived right at the threshold—after the worst extinction event ever, when almost everything was dead. The fact that they survived tells us something about resilience. And their presence in Mozambique means we can now study that recovery story in a place we've never looked before.
The study mentions this opens the door to finding actual dinosaurs. Is that just hopeful speculation?
Not really. If you find early Triassic vertebrates in a rock formation, the geology tells you there's a whole ecosystem preserved there. Dinosaurs came later in the Triassic, so if the conditions were right to preserve these creatures, they likely preserved dinosaurs too. It's not speculation—it's reading the landscape.
What's the significance of the extinction event itself? Why keep bringing it up?
Because it's the hinge of history. Ninety-five percent of species died. Everything we know—mammals, birds, us—exists because some creatures made it through. These Lystrosaurus were among the survivors. Finding them in Mozambique means we can study how life reorganized itself after total collapse, and we can do it in a region that's been invisible to paleontology until now.
Does this change how we understand African paleontology?
It expands it. South Africa has been the center of Triassic research in Africa. Now Mozambique enters the picture. That's not just adding another location—it's potentially revealing a whole network of ancient ecosystems we didn't know existed. One discovery often leads to many.
What happens next?
More expeditions. The team knows where to look now. They'll return to those same rock formations, dig deeper, search wider. Each season could yield more specimens, more species, more pieces of the puzzle. The real work is just beginning.