III.—A Contribution to the Study of the British Carboniferous Tubicolar Annelida
- 1 July 1880
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 7 (7) , 304-307
- https://doi.org/10.1017/s0016756800147855
Abstract
Sp. char.—Tube small, sinistral, narrow, increasing but little in size towards the aperture, very narrow and fine towards the apex; volutions not in the same plane, somewhat raised, with a sunken apex, rather deeply umbilicated on the attached side; section circular. Surface marked with faint, regular, equidistant, transverse ridges, which are more marked along the union of the whorls (or “suture”) than on the periphery or back of the last volution.Keywords
This publication has 0 references indexed in Scilit: