Oxalaia Facts
Pronunciation: ox-ah-LIE-ah
Name meaning: Named after Oxalá, a deity in Afro-Brazilian religions
| Diet | Piscivore |
| Height | 5m |
| Length | 14m |
| Weight | 7 tonnes |
| Environment | Water |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Theropod |
| Location | Brazil |
Oxalaia was a massive theropod dinosaur that lived in what is now northeastern Brazil during the Late Cretaceous period, between 100.5 and 93.9 million years ago. This remarkable predator was adapted for a semi-aquatic lifestyle, spending much of its time hunting fish and other aquatic prey in the ancient river systems and coastal waters of South America.
With an estimated length of 14 metres and weighing around 7 tonnes, Oxalaia was the largest carnivorous dinosaur ever discovered in Brazil. Like other members of its family, it possessed an elongated skull with a narrow snout filled with conical teeth perfectly suited for gripping slippery fish. Its powerful jaws and robust build suggest it was capable of tackling large prey both in water and on land.
The dinosaur's fossils were discovered in 1999 on Cajual Island in the rocks of the Alcântara Formation, an area rich in Cretaceous marine and terrestrial fossils. The fragmentary remains, including parts of the skull, provide crucial evidence of this impressive predator's existence in ancient Brazil.
Oxalaia lived in a warm, humid environment with extensive river systems, mangrove forests, and coastal plains. This theropod was well-adapted to this aquatic environment, likely wading through shallow waters and using its sensitive snout to detect fish and other prey beneath the surface.
What made Oxalaia distinctive?
Oxalaia had an elongated, crocodile-like skull with a narrow snout filled with sharp, conical teeth designed for catching fish. Its massive size, estimated at 14 metres in length, made it one of the largest theropod dinosaurs. The robust build and semi-aquatic adaptations distinguished it from other large predatory dinosaurs.
Behaviour
Oxalaia was primarily a fish-eater that likely spent considerable time wading through shallow waters and river systems. It probably used its elongated snout to probe underwater vegetation and sediment for fish, similar to modern herons or storks, but on a much larger scale.
Discovery
Oxalaia was first described by Alexander Kellner in 2011. The original fossils were discovered at Cajual Island, Alcântara Formation, Brazil.
Oxalaia FAQ
What did Oxalaia eat?
Oxalaia was primarily a fish-eater (piscivore) that fed on large fish and other aquatic animals in the rivers and coastal waters of ancient Brazil. Its elongated snout and conical teeth were perfectly adapted for catching and gripping slippery prey underwater.
How big was Oxalaia?
Oxalaia was enormous, reaching an estimated 14 metres in length and standing about 5 metres tall at the hip. It weighed approximately 7 tonnes, making it the largest carnivorous dinosaur ever discovered in Brazil.
When did Oxalaia live?
Oxalaia lived during the
Late Cretaceous period, specifically during the Cenomanian stage between 100.5 and 93.9 million years ago. This was a time when sea levels were high and the climate was warm and humid.
Where was Oxalaia found?
Oxalaia fossils were discovered in 1999 on Cajual Island in northeastern Brazil, within the rocks of the Alcântara Formation. This area is known for its abundance of Cretaceous fossils and has become an important palaeontological site.
How do you pronounce Oxalaia?
Oxalaia is pronounced 'ox-ah-LIE-ah', with the emphasis on the third syllable. The name comes from Oxalá, an important deity in Afro-Brazilian religions.
What does Oxalaia mean?
Oxalaia is named after Oxalá, a deity in Afro-Brazilian religions, particularly Candomblé. The species name 'quilombensis' refers to the Brazilian quilombo settlements, communities founded by escaped enslaved people.
How fast could Oxalaia run?
The running speed of Oxalaia is unknown, but given its massive size and semi-aquatic lifestyle, it was likely not built for high-speed pursuit on land. It probably moved relatively slowly on land but was well-adapted for moving through water.
What type of dinosaur was Oxalaia?
Oxalaia was a theropod dinosaur, specifically a member of the Spinosauridae family. These were large, semi-aquatic predatory dinosaurs known for their elongated skulls and fish-eating adaptations.
Was Oxalaia related to birds?
Yes, as a theropod dinosaur, Oxalaia was part of the group that gave rise to modern birds. All theropods, including Oxalaia, share a common ancestor with birds, making them distant relatives of today's avian species.
How many Oxalaia fossils have been found?
Only fragmentary fossils of Oxalaia have been found, including parts of the skull discovered in 1999. These remains were sufficient to identify it as a new species, but more complete specimens would help scientists better understand this impressive dinosaur.
