Did mosasaurs lay eggs?Asked by: Franco Weber
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It is the second largest fossil egg ever found and may have belonged to a mosasaur, a 10-meter-long marine predator. Some snakes and lizards, living mosasaur relatives, lay eggs with thin shells that hatch almost as soon as they are laid. The new find suggests mosasaurs may have, too.View full answer
Also Know, Where did mosasaurs lay their eggs?
The fossilised egg was discovered on Seymour Island, off the west coast of Antarctica, by a team of Chilean palaeontologists including David Rubilar-Rogers of the National Museum of Natural History in Santiago.
Beside the above, How did mosasaurs reproduce?. Because of their body structure, researchers had suspected that mosasaurs did not haul themselves out onto a beach to lay eggs, similar to how sea turtles reproduce. Fossilized remains of other prehistoric swimmers, the ichthyosaurs, have been found in the process of giving birth.
One may also ask, Did mosasaurs give live birth?
Other extinct marine reptiles, such as ichthyosaurs, mosasaurs and choristoderans, were known to give birth to live young, a strategy called viviparity.
Did marine reptiles give live birth?
Live birth is probably a useful feature for marine reptiles but not essential for invading marine environments—three of the four living marine reptile lineages lay eggs on land, and there is no evidence to suggest that the most basal members within each Mesozoic marine reptile group, including sauropterygians and ...
Ichthyosaurs are superficially dolphin-like reptiles that were important marine predators from the Triassic Period through the middle of the Cretaceous Period. ... For now, paleontologists think that ichthyosaurs are diapsids, but exactly where they fit in the diapsid tree is not yet known.
Live birth evolved independently in more than 140 different species, including about 100 reptiles. Other extinct aquatic reptiles that gave birth to live young include the plesiosaur and the mosasaur; in 2011, scientists discovered a pregnant plesiosaur, a marine reptile, which lived some 78 million years ago.
While a similar length, the Megalodon had a much more robust body and huge jaws built for devouring whales and other large marine mammals. A Mosasaurus would not have been able to get its jaws around the much thicker body of the Megalodon. It would just take one catastrophic bite for the Megalodon to end the battle.
They reached 10-20 feet long. Platycarpus lived 85-80 mya and was the most common mosasaur in North America. It was generally 14 feet long, shorter in the skull than other mosasaurs, and likely ate shellfish in the shallow sea that covered the middle of North America. Other mosasaurs were predominantly large.
In a study published today in the science journal Nature, researchers from the University of Texas at Austin and the University of Chile dated the nearshore rock formation where the fossil egg was found to be from the Late Cretaceous period—about 68 million years ago—and measured the fossil itself to be roughly 11.4 ...
Mosasaurs (from Latin Mosa meaning the 'Meuse', and Greek σαύρος sauros meaning 'lizard') comprise a group of extinct, large marine reptiles from the Late Cretaceous. ... They became extinct as a result of the K-Pg event at the end of the Cretaceous period, about 66 million years ago.
So It was around 14.2-15.3 meters long, and possibly weighing 30 tons. Mosasaurus was longer than Megalodon so yeah. But many Megalodon fans say it's not true, but since this is measured by scientists, this is likely the real size. ... According to many scientists, it's the largest fish ever discovered.
The blue whale is a marine mammal measuring up to 98 feet in length and with a maximum recorded weight of 190 short tons, it is the largest animal known to have ever existed. The largest mosasaurs species reached lengths up to 56 feet.
Granger finally said, 'No dinosaur eggs have ever been found, but the reptile probably did lay eggs. ... However in the 1990s Museum expeditions discovered identical eggs, one of which contained the embryo of an Oviraptor, like dinosaur—which changed scientists' view of which dinosaur laid these eggs.
Mosasaurs ARE NOT DINOSAURS. They are reptiles and are closely related to snakes and monitor lizards. Mosasaurs went extinct at the end of the Cretaceous during the end Cretaceous mass extinction event. The Tylosaurus mosasaur shown on the Jurassic Park movie was the largest mosasaur to exist.
Dinosaur eggs vary greatly in size and shape, but even the largest dinosaur eggs (Megaloolithus) are smaller than the largest known bird eggs, which were laid by the extinct elephant bird. Dinosaur eggs range in shape from spherical to highly elongated (some specimens three times longer than they are wide).
Fossil remains of megalodon have been found in shallow tropical and temperate seas along the coastlines and continental shelf regions of all continents except Antarctica.
For Senter, the most annoying thing is the dinosaurs' front limbs. ... But dinosaurs likely didn't have forked tongues. (Mallon says scientists aren't 100 percent sure about that, but base their belief on the fact that today's closest dinosaur relatives — birds and crocodiles — don't have forked tongues.)
Even at 40 meters long, this would make the Jurassic World Mosasaurus by far the largest animal to have ever lived. For context, the largest blue whales, the biggest living animal today, top out at around 30 meters long. Even for a prehistoric marine reptile, 40-80 meters is absurdly big.
We know that megalodon had become extinct by the end of the Pliocene (2.6 million years ago), when the planet entered a phase of global cooling. ... It may also have resulted in the megalodon's prey either going extinct or adapting to the cooler waters and moving to where the sharks could not follow.
There are many animals that could beat megalodon. Some say megalodon ate Livyatan but it was an ambush predator and Livyatan might have eaten it too. The modern sperm whale, fin whale, blue whale, Sei whale, Triassic kraken, pliosaurus and colossal squid could all beat the megalodon.
When it comes to size, the blue whale dwarfs even the largest megalodon estimates. It's believed blue whales can reach a maximum length of 110 feet (34 meters) and weigh up to 200 tons (400,000 pounds!). But, is the blue whale truly the biggest animal ever?
Description. Skinks look like lizards of the family Lacertidae (sometimes called true lizards), but most species of skinks have no pronounced neck and relatively small legs. ... In such species, their locomotion resembles that of snakes more than that of lizards with well-developed limbs.
Turtles, toads, spiders, snails, fish, birds, insects, and crayfish all hatch from eggs. Eggs develop inside female animals.
- Sea Snakes.
- Water Snakes.
- Garter Snakes.
- Boa Constrictors.
- White-lipped Snakes.