Ellipse
Poles sharply curved
2-8 blastomeres surrounded by wide fluid-filled cavity
Nematodirus battus
Length 164 µm
Width 72 µm
Shell thin, brown, parallel sides
Nematodirus filicollis
Length 150 µm
Width 75 µm
Shell thin, colourless
Nematodirus helvetianus
Length 212 µm
Width 97 µm
Shell thin, colourless
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