| The First Discovery of Crustoidea (Graptolithina) and Rhabdopleurida (Pterobranchia) in the Silurian Piotr Mierzejewski Bulletin de l'Académie Polonaise de Sciences; Série de la Terre 1977 (1978), 25, 2, 103-107. |
| [ABSTRACT, p. 103] Fragments of rhabdosomes of the graptolite Bulmanicrusta latialata latialata Kozlowski, 1962 (Crustoidea, Wimanicrustidae), etched from the Silurian (middle Ludlovian) erratic boulder are described. This find takes up the upper stratigraphic range of the order Crustoidea from the Middle Ordovician to the Upper Silurian. From the same boulder zooidal tubes of the first Silurian pterobranchs (Pterobranchia, Rhabdopleurida) are described under the name ?Rhabdopleura sp. |
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| Fig. 1. Bulmanicrusta latialata latialata |
| Fig. 2. ?Rhabdopleura sp. |
