Catalogue of Brazilian Porifera - Porifera Brasil - UFRJ

Introductory SectionArticles per Decade25020015010050Pallas (?)ChallengerCalypso01750 1770 1790 1810 1830 1850 1870 1890 1910 1930 1950 1970 1990 2010Fig. 1. Evolution of the number of publications on Brazilian sponges per decade from 1750 to 2010. Challenger andCalypso are the two most important early expeditions that increased significantly the number of known species inBrazil. The question mark represents the uncertainty that remains about whether Pallas (1766) descriptions from“Mare Americanum” were from Brazil or from elsewhere in the Western Atlantic (see text for explanation).13