Vertigo oscariana Sterki, 1890

Length, 1.7 mm; with 3 or 4 teeth (upper palatal as shown here is usually absent); columellar lamella elongate vertical; lip thin, very slightly recurved; shell rather thin, semi-translucent, surface shining, growth lines faint.

Without strong crest behind lip

 

 


Notes:
Locality: Missouri, Oregon Co., Bluffs along Eleven Point River


References:
Pilsbry, 1948, LMNA pp. 946, fig. 509a, 510 8,10,11
Hubricht, 1985, Dist. Nat. Land. Moll. E. US, p. 10, map 66