After dinosaurs, this enormous crocodile-like creature ruled the Caribbean.
crocodile that resembled a greyhound.
By Melissa Ait Lounis
The remnants of a sebecid, a large crocodile that resembled a greyhound
and lived long after non-avian dinosaurs were extinct,
have been identified by paleontologists.
A Revolutionary Finding
In addition to its enormous size—it could grow up to 20 feet—the sebecid,
an apex predator, was crucial in changing our understanding of prehistoric
Caribbean ecosystems.
When ancient teeth thought to be those of a giant predator were discovered
in the Caribbean more than thirty years ago, the riddle surrounding the
sebecid was revealed.
The tapered shape and sharp edges of these teeth made them immediately
identifiable. The discovery of a 29-million-year-old tooth
in Puerto Rico was one particularly intriguing discovery, but at first, scientists
were unable to determine the species that produced the remains.
Paleontologists made a significant discovery in early 2023 when they found
two vertebrae and a petrified tooth in the Dominican Republic.
Researchers were able to verify that the remains belonged to a sebecid,
a prehistoric crocodilian predator that formerly roamed the South American
continent, thanks to this discovery.
The Notosuchia, a varied group of ancient crocodilians that lived during the
dinosaur era, included the fierce, land-dwelling giant crocodile-like Sebecids.
These animals lived on land and behaved more like carnivorous dinosaurs.
Because of their long, strong limbs, Sebecids were able to walk on land with
unexpected agility.
Bony plates placed in their skin served as armor for their bodies, which could
reach a length of 20 feet.
In their various habitats, they occupied the highest position on the food chain. of their extreme adaptability, they could live in a variety of environments and
eat a broad variety of prey.
During the same extinction event that took off the dinosaurs, sebecids, which
were previously common throughout South America, went extinct about
66 million years ago.
The hypothesis of GAARlandia The topic of how sebecids got to the Caribbean is among most fascinating
The hypothesis of GAARlandia The topic of how sebecids got to the Caribbean is among most fascinating
parts of this finding.
The curator of vertebrate paleontology at the Florida Museum of Natural History,
Jonathan Bloch, said, "You could not have predicted this by analyzing the
present ecosystem." "It is exciting to think about what other discoveries might be ahead as we go
deeper into the Caribbean's fossil record, and existence of a huge predator
is completely unlike anything we had previously envisioned."
Animals on land would not have been able to migrate between the islands
and South America because of sea that separates them.
This prompted researchers to put forth the GAARlandia theory, which postulates
that the two landmasses may have been connected millions of years ago
by a chain of islands or temporary land bridge.
If confirmed, this theory would help explain how the sebecids and perhaps other
species managed to travel to the islands and take root in a new environment.
Source dailygalaxy.com
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