Hemiphragma Ulrich, 1893

Type species: Batostoma irrasum Ulrich, 1886

Synonyms Author Type Species
Labyrinthotuba Gorka, 1969 Labyrinthotuba kozlowskii Gorka, 1969 (=Batostoma irrasa Ulrich, 1886)

This genus includes the species:

  1. Hemiphragma bassleri
  2. Ruedemann, 1925 Ordovician Caradoc USA New York
  3. Hemiphragma batheri
  4. Bassler, 1911 Ordovician Caradoc Sweden, Belarus
  5. Hemiphragma bondarevi
  6. Astrova, 1965 Ordovician Llanvirn-Caradoc Russia
  7. Hemiphragma? convexa
  8. (Gorka, 1969) Ordovician Poland
  9. Hemiphragma curvilineum
  10. Conti, 1990 Ordovician Italy Sardinia
  11. Hemiphragma imperfectum
  12. (Ulrich, 1890) Ordovician Ashgill USA Illinois
  13. Hemiphragma irrasum
  14. (Ulrich, 1886) Ordovician USA Minnesota
  15. Hemiphragma nonnulum
  16. Astrova, 1965 Ordovician Llanvirn-Caradoc Russia
  17. Hemiphragma ottawaense
  18. (Foord, 1883) Ordovician Caradoc Canada Ontario, USA
  19. Hemiphragma panderi
  20. (Dybowski, 1877) Ordovician Caradoc Estonia
  21. Hemiphragma pitchishuensis
  22. Modzalevskaya, 1979 Silurian Russia
  23. Hemiphragma priscum
  24. Pushkin, 1999 Ordovician Belarus?
  25. Hemiphragma pulchrum
  26. Loeblich, 1942 Ordovician Caradoc USA Oklahoma
  27. Hemiphragma pygmaeum
  28. Bassler, 1911 Ordovician Sweden, Belaraus, Wales
  29. Hemiphragma rotundatum
  30. Bassler, 1911 Ordovician Llanvirn Estonia
  31. Hemiphragma shermanense
  32. Fritz, 1957 Ordovician Caradoc Canada
  33. Hemiphragma subirrasum
  34. Männil et Pushkin, 1987 Middle Ordovician Darriwilian Estonia
  35. Hemiphragma subnonnulum
  36. Modzalevskaya, 1980 Ordovician Russia
  37. Hemiphragma subtile
  38. Conti, 1990 Ordovician Italy Sardinia
  39. Hemiphragma? tuberculatum
  40. Nekhorosheva, 1965 Ordovician Caradoc Russia

Hemiphragma batheri at fossiilid.info.

Hemiphragma convexa at fossiilid.info.

Hemiphragma subirrasum at fossiilid.info.

This information is based upon various sources, but no personal knowledge. I am indebted to the late Alan Horowitz for his compilation, and to Dr. J. Pachut.
I would be grateful for corrections to, or critical reviews of this information. This is not a 'final' version (an impossible ideal), but a working document.


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Edited by Phil Bock
Modified on 19/6/2017
Modified on 19/9/2017 (Addded H.subirrasum)
This URL is http://bryozoa.net/trepostomatida/dittoporidae/hemiphragma.html