Compare Muelleria agnellus
Compare
Muelleria terrestris has smaller valves (< 9 µm wide). Muelleria gibbula has smaller valves and a gibbous central margin. The valves of M. spauldingiae are elliptic while those of M. tetonensis are linear-elliptic with parallel margins. While similar in shape, valves of M. regigeorgiensis are smaller, and stria density is higher near the valve ends.
LM scalebar = 10 µm
Length Range
26.9-59.6 µm
26.9-59.6 µm
Width Range
9.5-12.3 µm
9.5-12.3 µm
Striae in 10 µm
13-18 at valve center, 20-24 at the apices
13-18 at valve center, 20-24 at the apices
Muelleria gibbula
Length Range
21.3-40.1 µm
21.3-40.1 µm
Width Range
6.8-9.6 µm
6.8-9.6 µm
Striae in 10 µm
18-22 at the valve center, 22-26 at the ends
18-22 at the valve center, 22-26 at the ends
Muelleria spauldingiae
Length Range
28.8-66.2 µm
28.8-66.2 µm
Width Range
11.7-15.0 µm
11.7-15.0 µm
Striae in 10 µm
14-17 at valve center, 18-21 at the apices
14-17 at valve center, 18-21 at the apices
Muelleria tetonensis
Length Range
27.2-52.6 µm
27.2-52.6 µm
Width Range
8.6-11.7 µm
8.6-11.7 µm
Striae in 10 µm
16-20 at valve center, 20-24 at the apices
16-20 at valve center, 20-24 at the apices