Gastropoda

Gastropods
Class Gastropoda Cuvier, 1797

et: teod; sv: snäckor; fi: kotilot; ru: Брюхоногие;

Taxon ID: 56 / 2013-12-12
Belongs to: Mollusca
Sister taxa: Bivalvia | Diplacophora | Helcionelloida | Hyolitha | Paragastropoda | Rostroconchia | Tergomya | Cephalopoda
Contains: Bellerophontida | Eogastropoda | Orthogastropoda | Prosobranchia | Semizona
Baltoscandian species (in database): 120

List of Baltoscandian species (may not be complete, up to 1000 species displayed)

  1. Boucotspira carinifer | Vormsi Stage → Pirgu Stage
  2. Brachytomaria baltica | Jõhvi Substage → Rakvere Stage
  3. Brachytomaria nodulosa | Nabala Stage → Pirgu Stage
  4. Brachytomaria plautini | Kunda Stage
  5. Brachytomaria plicifera | Vormsi Stage → Pirgu Stage
  6. Bucanella crispata | Aseri Stage
  7. Bucanella revaliensis | Kunda Stage
  8. Bucania cornu | Vormsi Stage → Pirgu Stage
  9. Bucania czekanowskii | Kukruse Stage
  10. Bucania erratica | Upper Ordovician
  11. Bucania oelandica |
  12. Bucania radiata | Rakvere Stage → Pirgu Stage
  13. Cataschisma nitida | Porkuni Stage
  14. Cataschisma winkleri | Kukruse Stage
  15. Cyclonema hiiumaa | Juuru Stage → Raikküla Stage
  16. Cyclonema rupestre | Nabala Stage → Pirgu Stage
  17. Cymbularia aequalis | Vormsi Stage
  18. Deaechospira elliptica | Lasnamägi Stage → Kukruse Stage
  19. Deaechospira inflata | Aseri Stage → Lasnamägi Stage
  20. Deaechospira maritima | Aseri Stage
  21. Ecculiomphalus incresens |
  22. Eccyliopterus regularis |
  23. Ectomaria nieszkowskii | Porkuni Stage
  24. Eotomaria notabilis |
  25. Eunema sulcifera | Nabala Stage
  26. Euomphalopterus alatus | Jaani Stage
  27. Fusispira bullatus | Pirgu Stage
  28. Fusispira ovalis | Vormsi Stage
  29. Holopea ampullacea | Nabala Stage → Pirgu Stage
  30. Holopea balticus | Jõhvi Substage → Oandu Stage
  31. Holopea filosus |
  32. Holopea inaequistriata | Nabala Stage → Pirgu Stage
  33. Hormotoma exilis | Rakvere Stage → Nabala Stage
  34. Hormotoma insignis | Rakvere Stage → Pirgu Stage
  35. Hormotoma meyendorfi | Porkuni Stage
  36. Hormotoma rudis | Pirgu Stage
  37. Hormotoma scrobiculata | Pirgu Stage
  38. Kiaeromphalus kristianiensis | Llandovery
  39. Kiaeromphalus undiferus | Adavere Stage
  40. Kokenospira lateralis | Haljala Stage
  41. Kokenospira retifera | Kukruse Stage
  42. Kokenospira undata | Aseri Stage
  43. Latitaenia aequicrescens | Vormsi Stage
  44. Latitaenia kirnaensis | Nabala Stage
  45. Lesueurilla helix | Kunda Stage
  46. Lesueurilla marginalis | Kunda Stage → Lasnamägi Stage
  47. Lesueurilla marginalis marginalis | Kunda Stage → Uhaku Stage
  48. Lesueurilla marginalis spiralis | Jõhvi Substage → Keila Stage
  49. Lophospira kuckersiana | Kukruse Stage
  50. Lophospira lyckholmiensis | Nabala Stage → Pirgu Stage
  51. Lophospira mickwitzi |
  52. Lophospira milleri | Kunda Stage → Lasnamägi Stage
  53. Lophospira subalata | Kukruse Stage → Keila Stage
  54. Loxonema strangulatum |
  55. Loxoplocus silurica | Lasnamägi Stage → Vormsi Stage
  56. Loxoplocus vermetus | Pirgu Stage
  57. Lytospira anguina | Haljala Stage
  58. Lytospira evolvens | Aseri Stage
  59. Lytospira tubicina | Kunda Stage
  60. Lytospira valida | Pirgu Stage
  61. Lytospira? exarta | Uhaku Stage
  62. Maclurites neritoides | Pirgu Stage
  63. Megalomphala contorta | Jõhvi Substage → Keila Stage
  64. Megalomphala crassa | Vormsi Stage → Pirgu Stage
  65. Megalomphala crassiuscula | Jõhvi Formation → Keila Stage
  66. Megalomphala cycloides | Keila Stage
  67. Megalomphala gotlandica | upper Silurian
  68. Megalomphala majorae | upper Silurian
  69. Megalomphala planorbiforma | Lower Ordovician
  70. Megalomphala taenia | upper Silurian
  71. Megalomphala wilfredi | lower Silurian
  72. Onychochilus physa | Ludlow
  73. Onychochilus reticulatum | Ludlow
  74. Pachystrophia dilatata | Kunda Stage
  75. Pachystrophia vortex | Vormsi Stage
  76. Pararaphistoma mutans | Lasnamägi Stage
  77. Pararaphistoma scalare |
  78. Pararaphistoma vaginati | Kunda Stage
  79. Phragmolites excavatus | Upper Ordovician
  80. Phragmolites lindstroemi | Upper Ordovician
  81. Poleumita discors | Jaagarahu Stage
  82. Poleumita rugosa | Jaani Stage
  83. Prosolarium limata |
  84. Proturritella acutum | Kunda Stage
  85. Proturritella angulosa | Aseri Stage
  86. Proturritella cingulata | Kunda Stage
  87. Proturritella gradata | Kunda Stage
  88. Proturritella piersalense | Pirgu Stage
  89. Proturritella reticulata | Kunda Stage
  90. Proturritella trimarginata | Kunda Stage → Lasnamägi Stage
  91. Pseudocryptaenia lahuseni | Oandu Stage
  92. Pseudocryptaulina chamaeconus | Nabala Stage → Vormsi Stage
  93. Ruedemannia aista | Porkuni Stage
  94. Ruedemannia borkholmiensis | Porkuni Stage
  95. Ruedemannia tolli | Porkuni Stage
  96. Salpingostoma carrolense | Kunda Stage
  97. Salpingostoma compressum | Uhaku Stage → Haljala Stage
  98. Salpingostoma locator |
  99. Salpingostoma megalostoma | Lasnamägi Stage
  100. Salpingostoma verrucosum | Kunda Stage
  101. Semizona bella | Katian
  102. Sinuites nitens | Nabala Stage → Vormsi Stage
  103. Sinuites rugulosus | Kunda Stage → Aseri Stage
  104. Subulites amphora | Idavere Substage → Rakvere Stage
  105. Subulites gigas | Vormsi Stage → Pirgu Stage
  106. Subulites priscus | Aseri Stage → Kukruse Stage
  107. Subulites revalensis | Lasnamägi Stage → Kukruse Stage
  108. Subulites subula | Rakvere Stage → Pirgu Stage
  109. Temnodiscus accola | Kukruse Stage → Keila Stage
  110. Temnodiscus pleurogonus |
  111. Tetranota conspicua | Nabala Stage → Vormsi Stage
  112. Tetranota jugata |
  113. Tetranota lineata |
  114. Tetranota obtusangulata |
  115. Trochomphalus borkholmiensis | Vormsi Stage → Porkuni Stage
  116. Trochomphalus dimidiatus | Porkuni Stage
  117. Trochonema minus | Porkuni Stage
  118. Trochonema panderi | Porkuni Stage
  119. Trochonema peraltum | Porkuni Stage
  120. Umbonellina infrasilurica |

Taxon overview

The Gastropoda or gastropods, more commonly known as snails and slugs, are a large taxonomic class within the phylum Mollusca.
Snails are distinguished by an anatomical process known as torsion, where the visceral mass of the animal rotates 180° to one side during development, such that the anus is situated more or less above the head. This process is unrelated to the coiling of the shell, which is a separate phenomenon. Torsion is present in all gastropods, but the opisthobranch gastropods are secondarily de-torted to various degrees.
Gastropods typically have a well-defined head with two or four sensory tentacles with eyes, and a ventral foot, which gives them their name (Greek gaster, stomach, and poda, feet). The larval shell of a gastropod is called a protoconch.
The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the early Cambrian.

Selection of related publications

  • Isakar, 2017. Huvitav leid: kivistunud "kihv"
  • Vinn & Wilson, 2013c. Silurian cornulitids of Estonia (Baltica)
  • Ebbestad et al., 2009. Predation on bellerophontiform molluscs in the Paleozoic
  • Frisk & Ebbestad, 2007. Paragastropoda, Tergomya and Gastropoda (Mollusca) from the Upper Ordovician Dalby Limestone, Sweden
  • Ebbestad & Högström, 2007b. Locality descriptions, the Siljan District
  • Isakar & Ebbestad, 2000. Bucania (Gastropoda) from the Ordovician of Estonia
  • Isakar et al., 1999. Homeomorphic gastropods from the Silurian of Norway, Estonia and Bohemia
  • Isakar, 1995a. The platyceratacean gastropod Cyclonema (Cyclonema) hiiumaa Teichert, 1928 from the Llandovery (Silurian) of Estonia
  • Isakar, 1991. Harjuan (Late Ordovician) new Bivalves and a new Gastropod from North Estonia
  • Isakar, 1990. Bivalvia and Gastropoda
  • Kisselev et al., 1990. Atlas of Upper Ordovician and Silurian molluscs from the nort-western part of East-European platform.
  • Rõõmusoks, 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I
  • Erisalu, päevik 5. Erisalu, päevik 5, Geoloogilise kaardistamise ekspeditsioon Nr.4, välipäevik
  • Öpik, 1930b. Beiträge zur Kenntnis der Kukruse-(C2-C3-)Stufe in Eesti. IV
  • Bekker, 1925a. Lühike ülevaade Eesti geoloogiast. (Eozoiline ja paleozoiline ladekond)
  • Koken & Perner, 1925. Die gastropoden des baltischen Untersilurs
  • Koken, 1897. Die Gastropoden des Baltischen Untersilurs
  • Koken, 1896. Die Leitfossilien. Ein Handbuch für den Unterricht und für das Bestimmen von Versteinerungen
  • Lindström, 1884. On the Silurian Gastropoda and Pteropoda of Gotland
  • Eichwald, 1861a. Палеонтология России. Древний период. II. Фауна граувакковой, горноизвестковой и медистослaнцеватой формаций России
  • Schmidt, 1858. Untersuchungen über die silurische Formation von Ehstland, Nord-Livland und Oesel