. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES, 85 C(ELOCLEMA LACINIATUS (Eichwald). Text fig. 25. Ccenites laciniatus Eichwald, Letheea Rossica, vol. 1, 1860, p. 459, pi. 27, fig. 9. Eichwald has given two figures, here reproduced, of a ceramopo- roid bryozoan from the ''calcaire a schiste argileux inflammable," wliich I have little hesitancy in identifying as a species of CcdodeTna occurring in the Kuckers shale. His description cites the type-speci- men as an incrusting lamella with the surface irregularly undulating. The specimens

. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES, 85 C(ELOCLEMA LACINIATUS (Eichwald). Text fig. 25. Ccenites laciniatus Eichwald, Letheea Rossica, vol. 1, 1860, p. 459, pi. 27, fig. 9. Eichwald has given two figures, here reproduced, of a ceramopo- roid bryozoan from the ''calcaire a schiste argileux inflammable," wliich I have little hesitancy in identifying as a species of CcdodeTna occurring in the Kuckers shale. His description cites the type-speci- men as an incrusting lamella with the surface irregularly undulating. The specimens

Book Worm / Alamy Stock Photo

Image ID: RG8XFT

This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.

. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES, 85 C(ELOCLEMA LACINIATUS (Eichwald). Text fig. 25. Ccenites laciniatus Eichwald, Letheea Rossica, vol. 1, 1860, p. 459, pi. 27, fig. 9. Eichwald has given two figures, here reproduced, of a ceramopo- roid bryozoan from the ''calcaire a schiste argileux inflammable," wliich I have little hesitancy in identifying as a species of CcdodeTna occurring in the Kuckers shale. His description cites the type-speci- men as an incrusting lamella with the surface irregularly undulating. The specimens before me agree exactly with Eichwald's figure of the zooecia, and, more- over, appear to be incrusting, undulating lamellse, but careful examination showed that they represent in reality the flattened sides of a hollow, tubular, ramose zoarium. Such zoaria spread out at their base into an incrusting expansion, and it is possible there- fore that Eichwald's type represents the base „ ^ "1 , . Fig. 25.—Cceloclema lacinta- mstead or the flattened branch. At any rate, tus. a, eichwald-s type- I beheve that the recognition of Ccenites specimen, natural size, of , . p r^ 1 1 • • 1 Ccenites laciniatus; 6, sue- Laciniatus as a species or CceLodema is m keep- face of the same, enlarged. ing with the facts. kuckers shale (C2), estho- ^ . 1111 ^^- (After Eichwald.) The internal structure, although poorly pre- served in the specimens studied, agrees in all respects with that of typical Cododema. The zooecial apertures as shown in Eichwald's enlargement of the surface, are arranged in diagonal rows with a dis- tinct, although little arched, lunarium. Measuring along one of these rows, four zooecia occur in 2 mm. The hollow zoarium of this species, when uncrushed, is about 5 mm. in diameter; the zooecial layer itself is less than 0.5 mm. thick. Occurrence.—^Apparently rare in the Kuckers shale (C2) at Erras and Keval, Esthonia. (Cat. No. 57197, U.S.N.M.) Genus CREPIPORA Ulr