What did snider-pellegrini do?

Answer 1

he worked on the theory of tectonic plates

Antonio Snider-Pellegrini(1802-1885)

In 1858, Snider-Pellegrini proposed that all of the continents were once connected together during the Pennsylvanian Period. He based this theory on the fact that he had found plant fossils in both Europe and the United States that were identical.

more info

http://en.wikipedia.org/wiki/Alexander_Du_Toit

Answer 2

Mary Snider-Pellegrini was a Basketball player who faced discrimination based on her gender identity. She challenged the policy of the Women's National Basketball Association (WNBA) that banned transgender athletes from playing in the league. Her case sparked a debate on inclusion and equality in sports.