near the historic landmark of São Vicente, Santos Bay (Baía de Santos), Brazil
latitude: -24     24°0'0"S
longitude: -46.349998     46°20'59.99"W
[Precision of location: Alexandria Digital Library (with NGA GNDB data)] 
[Site Named Here by name of island, bay, strait, lake, river, or stream, etc., named in source publication] 
| Notoplana syntoma Marcus, 1947 | 1948 or earlier in the 1940s | upper littoral | rocks | 2 mature specimens. | 
| Notoplana syntoma Marcus, 1947 | Oct 1946 or Jan 1947 | upper littoral | rocks | 
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