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| ________________________________________________________________________________________ GRAPTOLITE NET is edited by Piotr Mierzejewski, the Count of Calmont and Countess Maja A. Korwin-Kossakowska since 2002 |
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| POSSIBLE CELLULAR TISSUE IN AN ORDOVICIAN GRAPTOBLAST P.R. Crowther, R.B. Rickards and A. Urbanek Geological Magazine 1987, 124, 1, 67-72 ________________________________________________________________________________ |
| An encysted portion of a crustoid stolotheca of Graptoblastoides sp. has revealed possible cellular tissue, but no gross zooidal morphology. Two explanations are suggested: one regarding the cellular complex as remnants of entrapped soft part; the other, less likely, indicating a local disturbance in the secrretion of the blastocrypt material.The celluar tissue is figured and described, and the opportunity is taken to review the extent of knowlege with respect to graptolite soft parts, and to compare the structures described with features of extant Rhabdopleura species. - - - Related pages: On the nature and development of graptoblasts Crustoid graptolites (Crustoidea) |