Distribution
Devonian of Italy, Silurian to Devonian of Algeria, Morocco; Silurian of Australia, Morocco, Russia, Sweden, United States; Ordovician of Australia, Canada, China, France, Ireland, Kazakhstan, Norway, Portugal, Russia, Spain, Sweden, the United Kingdom, United States; Llandeilo of China; Whiterockian of United States; Dawan of China; Arenig of China. ==Species==
Species
• Strophomena amoena • Strophomena billingsi • Strophomena concordensis • Strophomena costellata • Strophomena dignata • Strophomena extensa • Strophomena euglypha • Strophomena filitexta • Strophomena fluctuosa • Strophomena hecuba • Strophomena hirundo • Strophomena incurvata • Strophomena lenta • Strophomena minuta • Strophomena nutans • Strophomena orthonurensis • Strophomena perconcava • Strophomena planumbona • Strophomena plattinensis • Strophomena rhomboidalis • Strophomena striatissima • Strophomena vetusta == See also ==