Guidebook for Field Trips
... Potsdam Formation contain a Skolithos ichnofacies of low-level suspension- feeders dominated by Diplocraterion. D. parallelum is abundant, whereas D. helmerseni is rare. Escape burrows resembling Monocraterion (Hallam and Swett, 1966) are very common in one thick aquot;whiteaquot; Potsdam bed. ... or on the margins of, Precambrian bedrock ridges (Selleck, 1984) provided an optimum habitat forD. parallelum. ... Figure 4: Schematic diagrams of ichnofabric indexes 1 through 5 103 A3.
| Title | : | Guidebook for Field Trips |
| Author | : | New York State Geological Association |
| Publisher | : | - 1993 |
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