Q:

Did all dinosaurs lay eggs?

A:

All dinosaurs laid eggs, which were fertilized through sexual reproduction between a male and a female. There is evidence that some species of dinosaurs cared for their young during incubation and after hatching.

Know More

Full Answer

Scientists have long asserted that dinosaurs are the ancestors of modern birds, and like modern birds, female dinosaurs laid eggs after mating with a male. Following incubation, during which time the eggs may or may not have received direct parental care through body warmth and protection, scientists have found evidence that – depending on the species – the hatchlings could either remain with the parents or leave the nest to fend for themselves.

Learn more in Dinosaurs

Related Questions

  • Q:

    When did dinosaurs first appear?

    A:

    The first true dinosaurs first appeared about 230 million years ago. The first dinosaur fossils are distinguished from those of their reptile ancestors by their more upright stance, with legs directly beneath the body instead of splayed to the side, as with other reptiles. The earliest dinosaur fossils were found in South America, although a December 2012 fossil discovery in southern Africa casts some doubt on a South American origin.

    Full Answer >
    Filed Under:
  • Q:

    Are there animals alive today that lived beside dinosaurs?

    A:

    There are some animals on earth that can be traced back to the Mesozoic Era when dinosaurs walked the earth; these animals include monotremes such as the duckbill platypus, reptiles such as the crocodilians and sea creatures such as the sea urchin. For the most part, the animals that are alive today have made evolutionary changes from the forms they had when dinosaurs were alive. For example, though the event that caused dinosaurs to die out also killed many other reptile species, several surviving reptile species have direct ancestors from that era, including the crocodilians, which are smaller than their Mesozoic ancestors.

    Full Answer >
    Filed Under:
  • Q:

    When were the dinosaurs born?

    A:

    The earliest conclusive evidence of the evolution of dinosaurs dates their origins to 230 million years ago. They are believed to have evolved from other reptilian species and developed certain defining characteristics, such as specialized hip and leg bones.

    Full Answer >
    Filed Under:
  • Q:

    What were the smallest dinosaurs?

    A:

    The smallest known dinosaur species include the Minmi, Pakicetus, Europasaurus, Phosphatherium, Microraptor, Raptorex, Microceratops, Lariosaurus and Nemicolopterus. These are all examples of the smallest dinos in a particular group, such as the smallest Raptor (Microraptor), which weighed around 2 pounds and was small enough to eat insects, and the smallest Tyrannosaur (Raptorex), which likely topped out at about 150 pounds.

    Full Answer >
    Filed Under:

Explore