Animals

They are located in the mandible, and there are vestigial teeth in the jaw, which are covered with g ...

Females lay eggs in September. They can be monogamous and form bonds with chosen individuals, which ...

They were identified as flying reptiles. It goes for the whole clade.

They were also used as a bait or for oil.

Scientists have been able to isolate a substance from the horseshoe crabs organism that is responsible for attracting eels, but it has not been synthesised yet.

It is due to the lack of thyrotropin, a hormone necessary for the thyroid gland to produce hormones allowing metamorphosis.

To date, about 67.000 species of these animals have been described.

Twins are very rare, occurring in only about 2% of all births. It is even less likely that both pups will survive.