Varieties of Salpingacantha from a 2015 sample in the Chukchi Sea (2015 St 5).

Salpingacantha from a sample in the Chukchi Sea (2015 St 5). In the sample Salpingella acuminata ("a") were dominant with (70 cells) for 15 Salpingacantha cells. "b" most closely corresponds with S. crenulata, "c" and "d" with S. perca, "e" with S. unguiculata and "f" with S. ampla. Note that form "e", if rotated 45°, could easily be mistaken for Salpingella acuminata.