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Compare Iconella tenera

(W.Greg.) Ruck and Nakov 2016

Compare

Surirella terryi has wider porcae and a more thickly silicified axial area.

Surirella minuta is smaller, less heteropolar and lacks porcae.

Surirella splendida is larger, with a more acute headpole and wider porcae.

LM scalebar = 10 µm
Surirella tenera LM1 Surirella tenera LM3 Surirella tenera LM5 Surirella tenera LM6 Surirella tenera LM8 Surirella tenera LM9 Surirella tenera LM11
Length Range
75-134.5 µm
Width Range
24.0-31.5 µm

Surirella terryi

Ward ex Terry 1907

Surirella terryi LM1 Gc 42664 Fossil Phila Sur Ter1A Copy Acadia Np 057A Gr Mead Sur Ter2A Boyer G7 9 Lees Pond Bristol Ct Sur Ter27B Cas 600484 2 Lk Ozette Wa Sur Ter6 Copy Gc 115390B Sycamore Lnj Sur Ter24A Copy Gc 114834A Kent Co De Sur Ter1A Publ Copy
Length Range
67–176 µm
Width Range
23–35 µm
Striae in 10 µm
21–26

Surirella pinnata

W.Smith 1853

Surirella minuta LM1 Surirella minuta LM5 Surirella minuta LM2 Surirella minuta LM3 Surirella minuta LM6 Surirella minuta LM4 Surirella minuta LM7
Length Range
18-71 µm
Width Range
8.5-14 µm
Striae in 10 µm
25-32

Also compare to

Surirella splendida

(Ehrenb.) Kütz. 1844

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