Fossil filmsPetrified woodFossil casts Perfect mouldsSurvivor toothMost fossils are more than 10,000 years old, but many date back to the beginnings of life on Earth. Fossils are formed when animal…
Internal anatomyExternal anatomyToothless beak and cheek teethHerbivore teethSome bipedal herbivoresAs well as the giant plant-eaters, there were several other groups of smaller herbivores,…
Scientists have developed various systems of classification to describe living things. The one used here is a cladogram, which is a diagram that shows the relationship between different species of…
A team of computer scientists and paleontologists from Sandia National Laboratories and the New Mexico Museum of Natural History and Science Museum has recreated the sound that a Parasaurolophus…
An immigrant is a person who comes to a country to take up permanent residence. The first known use of the term was in a textbook, American Geography, by Jedidah Morse published in 1789. See…
Immigration Statistics from the most recent data available from the Department of Homeland Security Related Links Notable U.S. Immigrants Immigration Facts The Green Card…
Immigrants having an eye exam at Ellis Island. Source: Library of Congress
The U.S. is a nation of immigrants. The first wave of immigrants to colonial America,…
