Helcionopsis striata

Autor:

Edward Oscar Ulrich (1857 – 1944) & Wilbur H. Scofield

Credit:

Ulrich E. O. & Scofield W. H. 1897. The Lower Silurian Gastropoda of Minnesota. In: Ulrich E. O., Scofield W. H., Clarke J. M. & Winchell N. H. The Geological and Natural History Survey of Minnesota, volume 3(2), Harrison and Smith, Minneapolis, 48 plates. Pages 813-1081, plates 61-82. Helcionopsis striata is on the page 827, plate VXI, figure 29-30.</ref>

Krótki link:

https://plwiki.pl/b/8f32f

źródło:

Wikimedia Commons

Wymiary:

344 x 409 Pixel (56694 Bytes)

Opis:

Drawing of dorsal view and lateral view of Helcionopsis striata. Head region is on the left.

Licencja:

Public domain