Compare Placoneis gastrum
Compare
Placoneis gastrum, P. placentula, P. minor, and P. clementis are similar in shape: elliptic valves with rostrate apices. Placoneis gastrum is distinguished by low stria density, broadly apices and large variable central area. Placoneis minor and P. clementis are shorter in length. Placoneis placentula has protracted, acute apices.
LM scalebar = 10 µm
Length Range
30.2-55.8 µm
30.2-55.8 µm
Width Range
15.9-20.0 µm
15.9-20.0 µm
Striae in 10 µm
7-9 near the center, up to 10 near the apices
7-9 near the center, up to 10 near the apices