Delaware Geological Survey

Phylum Annelida

Phylum Annelida

Annelids are segmented worms. The remains of the soft-bodied segmented worms are not usually preserved as fossils. Some marine (salt-water) types, however, secrete tubes of calcium carbonate to use both as a home and to provide protection from their enemies. These tubes can be found as isolated specimens or attached to larger shells. Two genera, Serpula and Hamulus, are fairly common in formations near the C&D canal.

Annelida

7. Serpula implicata - specimen from the Mount Laurel Formation, also occurs in the Merchantville Formation
8. Hamulus sp. - specimen from the Mount Laurel Formation, also occurs in the Merchantville Formation

Photographs from Plate 1, DGS Special Publication No. 18, by E. M. Lauginiger, 1988.

Annelida

- Serpula implicata - occurs in the Mount Laurel Formation and the Merchantville Formation
- Hamulus sp. - occurs in the Mount Laurel Formation and the Merchantville Formation

Illustrations from Figure 11, DGS Special Publication No. 18, by E. M. Lauginiger, 1988.

Annelida

2. Serpula sp.

Photograph from Plate VI, DGS Report of Investigations No. 21, by T. E. Pickett, 1972.


Delaware Geological Survey © 2007
http://www.dgs.udel.edu