Abstract
The minute problematic fossil Jinonicella kolebabai Pokorny 1978 is described from the Lower Silurian (Wenlock, middle Sheinwoodian) of the Nar-I core from southern Gotland. Growth lines indicate that the characteristic tubular snorkel of Jinonicella grew by envelopment of an emargination in the median dorsal aperture and not as a perforation through the dorsal surface of the shell. The direction of shell coiling indicates that Jinonicella kolebabai can not be closely related to scaphopods (?Devonian, Carboniferous-Recent). If it is a mollusc, it may represent an independent adaptation to the infaunal scaphopod mode of life.
| Original language | English |
|---|---|
| Pages (from-to) | 39-42 |
| Journal | GFF |
| Volume | 128 |
| Publication status | Published - 2006 |
Subject classification (UKÄ)
- Geology
Free keywords
- mollusc
- pseudo-scaphopod
- Silurian
- Gotland