SEM scalebar = 5 µm

Site ID: Iowa Lakeside Lab 2012 T_0_1

Site Name: Toolik Lake sediment, Alaska North Slope

Latitude: 68.63

Longitude: -149.60

Caption: detail, internal valve face

Notes: Central fultoportulae are surrounded by 3 satellite pores and the rimoportula is positioned oblique to the striae.

Contributor: William Daniels - June 2012