Lioloma pacificum
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Taxonomic Group: Diatom
Trophic Status: Autotrophic
Size Range: 5.7-10 μm wide x 712.8-723 μm long (LUMCON Guide); 1.8-7 μm wide x 525-1076 μm long (Tomas 1997)
Key Characteristics: Cells heteropolar, head pole with spines and foot pole wedge-shaped in valve and girdle views; valve width almost the same from head pole until somewhat enlarged for a short distance from the foot pole; cells in fan-shaped colonies
Confused With: If single cell, at first glance with Proboscia alata, which is also extremely elongate, but is a centric diatom and has a short tube-like process on valve ends that resembles an elephant’s trunk
Toxin: None known