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Silurian Echiuroids: Possible Feeding Traces in the Thorold Sandstone

1973; American Association for the Advancement of Science; Volume: 180; Issue: 4092 Linguagem: Inglês

10.1126/science.180.4092.1285

1095-9203

Michael J. Risk,

Marine and environmental studies

Problematic trace fossils collected from the Middle Silurian Thorold Sandstone bear a striking resemblance to feeding traces made by the proboscises of modern echiuroid wormns. Paleoecological approximations of depth and salinity may be possible depending on population densities. Echiuroids may have been a significant element of the Paleozoic benthos.