Sentence 1: `` Pogonodon '' was described in 1880 by Edward Drinker Cope . Two species are recognized , `` P. davisi '' and `` P. platycopis '' .
Sentence 2: `` Pogonodon '' was described in 1880 by Edward Drinker Cope , two species are known : `` P. davisi '' and `` P. platycopis '' .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?