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Encrinurine trilobites from the Silurian Brownsport Formation of Tennessee

  • Gregory D. Edgecombe (a1) (a2)

Abstract

Encrinurinae from the Ludlovian Brownsport Formation in west central Tennessee include Balizoma ramskoeldi n. sp., Fragiscutum glebale Campbell, 1967, and Mackenziurus sp. Balizoma ramskoeldi is most similar to Ludlovian species in England and Gotland. The discovery of F. glebale in Tennessee extends the geographic range of this species, known also from the correlative Henryhouse Formation in Oklahoma. Fragiscutum is an eastern/southern Laurentian endemic; Balizoma is of Wenlockian–Přidolían range, with its most widespread Euramerican distribution in the Ludlow. The stratigraphic range of Mackenziurus is extended into the Ludlow.

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Encrinurine trilobites from the Silurian Brownsport Formation of Tennessee

  • Gregory D. Edgecombe (a1) (a2)

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