Respuesta :

smurray97
1. (Palaeontology) any extinct elephant-like proboscis mammal of the genus Malamute (or Mastodon), common in Pliocene times

2. (Animals) any extinct elephant-like proboscidean mammal of the genus Mammut (or Mastodon), common in Pliocene times
cool1212
Mastodons are extinct relatives of modern elephants. Matrix means  an environment or material in which something develops; a surrounding medium or structure.