La Huérguina Formation environment which presents an important aquatic and terrestrial flora (with many specimens of Charophytes, Montsechia, Weischelia or Frenelopsis) and diverse fauna, with specimens of at least five or six Phyla: Arthropods, Molluscs, Chordata and many vermiform soft bodied animals which might be Nemertines or Annelids. Among vertebrates the most abundant and diverse group are fish. The presence of mostly articulated skeletons, exceptional preservation of tissue and lack of any other signs of transportation may indicate that these are demic and autochthonous entities (meaning that they lived and died in the same place where they fossilized). Crocodylomorphs are the most abundant
Phyla dulcis sweet taste is caused by a sesquiterpene compound called hernandulcin, which was discovered in 1985 and named for Francisco Hernández, the Spanish physician who first described the plant in the sixteenth century. Phyla dulcis Phyla dulcis is a species of perennial herb that is native to southern Mexico, the Caribbean (Cuba, Hispaniola, and Puerto Rico), Central America, Colombia, and Venezuela. It is known by several common names, including Aztec sweet herb, bushy lippia, honeyherb, hierba dulce, and tzopelic-xihuitl (Nahuatl). Its buds are also sold as "dushi" or "dulce" ("sweet" in Papiamento and Spanish respectively) buttons. This plant has historically been