| Arthropoda | Thecostraca | Cirripedia | Balanomorpha |
| Balanidae | Paraconcavus | prebrevicalcar |
| Genus | Species |
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Originally entered as topotype of Balanus oppidieboraci Ross 1964. Balanus oppidieboraci Ross, 1964 was synomized with Balanus pacificus prebrevicalcar Ross, 1964 as Paraconcavus prebrevicalcar (Ross, 1964) by Zullo, 1992 (https://www.jstor.org/stable/1315604?seq=40).
U.S. Geol. Survey Locality 22209.
Whale excavation site near Hampton, Virginia.
76.3333° N
37.05° W
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W. Old | Jr
Arnold Ross
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Fossil. Upper portion of the Yorktown Formation. Upper Miocene.