Anticalyptraea

Anticalyptraea
Temporal range: Silurian–Devonian
Anticalyptraea calyptrata from the Kaugatuma Formation (Silurian, Pridoli) in Saaremaa, Estonia.
Scientific classification
Kingdom: Animalia
Phylum: incertae sedis
Class: Tentaculita†
Bouček, 1964
Genus: Anticalyptraea†
Quenstedt 1867
Species

See text.

Synonyms

Autodetus Lindström, 1884

Anticalyptraea is a fossil genus of encrusting tentaculitoid tubeworms from the Silurian to Devonian of Europe and North America (Vinn, 2010) [1] . Anticalyptraea commonly encrust various invertebrate fossils such as stromatoporoids, rugose corals, bryozoans, brachiopods and crinoids, but they can also be common on the hardgrounds.[2] They were often attacked by predators in the Pridoli of Baltica.[3]

Anticalyptraea was traditionally interpreted as a phorid gastropod, but was later assigned to the Class Tentaculita [4] . Its dextrally coiled substrate-cemented tube, bulbous initial chamber, vesicular tube wall and pseudopunctate microlamellar shell structure closely resembles trypanoporids (Tentaculita), but Anticalyptraea differs in having the cones of the pseudopunctae oriented in the opposite direction. Pseudopunctae oriented similarly to Anticalyptraea occur in Cornulites (cornulitids) and thick-walled tentaculitids. The name Anticalyptraea is a reference to the gastropod genus Calyptraea.

References

  1. ↑ Vinn, O. (2010). "Adaptive strategies in the evolution of encrusting tentaculitoid tubeworms". Palaeogeography Palaeoclimatology Palaeoecology. 292: 211–221. doi:10.1016/j.palaeo.2010.03.046. Retrieved 2014-01-11.
  2. ↑ Vinn, O.; Wilson, M.A. (2010). "Microconchid-dominated hardground association from the late Pridoli (Silurian) of Saaremaa, Estonia". Palaeontologia Electronica. 2010 (2): 13.2.9A. Retrieved 2012-09-16.
  3. ↑ Vinn, O. (2012). "Shell repair in Anticalyptraea (Tentaculita) in the late Silurian (Pridoli) of Baltica". Carnets de Géologie. 2012 (1): CG2012_L01. doi:10.4267/2042/46096. Retrieved 2012-10-01.
  4. ↑ Vinn, O.; Isakar, M. (2007). "The tentaculitid affinities of Anticalyptraea from the Silurian of Baltoscandia". Palaeontology. 50: 1385–1390. doi:10.1111/j.1475-4983.2007.00715.x. Retrieved 2014-06-11.
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