Ross, R. J. Jr. (1972). Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada. <em>U.S. Geological Survey Professional Paper.</em> 685: 1-47, 18 plates.[details]
Traits (2025). Phragmorthis antiqua Ross, 1972 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1743337 on 2025-05-25
Marine Species Traits editorial board (2025). Marine Species Traits. Phragmorthis antiqua Ross, 1972 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1743337 on 2025-05-25
original descriptionRoss, R. J. Jr. (1972). Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada. <em>U.S. Geological Survey Professional Paper.</em> 685: 1-47, 18 plates.[details]
Website and databases developed and hosted by VLIZ · Page generated 2025-05-25 · contact: info@marinespecies.org