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Systematic overview of the molluscs and barnacles of the quaternary Breiðavík Group North Iceland
Símonarson, L.A.; Eiríksson, J. (2021). Systematic overview of the molluscs and barnacles of the quaternary Breiðavík Group North Iceland, in: Eiríksson, J. et al. Pacific - Atlantic mollusc migration: Pliocene inter-ocean gateway archives on Tjörnes, North Iceland. Topics in Geobiology, 52: pp. 667-755. https://dx.doi.org/10.1007/978-3-030-59663-7_11
In: Eiríksson, J.; Símonarson, L.A. (Ed.) (2021). Pacific - Atlantic mollusc migration: Pliocene inter-ocean gateway archives on Tjörnes, North Iceland. Topics in Geobiology, 52. Springer: Cham. e-ISBN 978-3-030-59663-7. X, 882 pp. https://dx.doi.org/10.1007/978-3-030-59663-7
In: Topics in Geobiology. Plenum: New York. ISSN 0275-0120
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| Trefwoorden |
Fauna > Aquatic organisms > Aquatic animals > Shellfish > Marine organisms > Marine molluscs
Zoogeography
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| Author keywords |
North Iceland; Tjörnes; Barnacles, Quaternary biostratigraphy, Marine invertebrate systematics |
| Auteurs | | Top |
- Símonarson, L.A.
- Eiríksson, J.
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| Abstract |
This chapter deals with the systematic aspects of the molluscan and barnacle assemblages found in the Breiðavík Group in North Iceland. They are primarily based on collections and field work carried out more or less each year since 1972. They are also based on the collections of the Institute of Natural History (Museum) in Reykjavík, the Geological Museum in Copenhagen, the collection of the farmer Jóhannes Björnsson in Ytri-Tunga on Tjörnes, and the collection of Már Vilhjálmsson in Icelandic Institute of Natural History. We report 14 species of prosobranch gastropods, 2 opisthobranch gastropod species, 29 species of bivalves, and 2 species of barnacles have been identified from the Breiðavík Group. In total, it is a question of 45 species of molluscs and 2 barnacle species. Two of the mollusc species are new for the Breiðavík Group. Each species is illustrated on plates, and variation in shape is demonstrated where the material makes it possible. The distribution, recent or fossil, of the various species is recorded, and pertinent ecological and biological features are discussed. The larval development of the species is also recorded as their ability to migrate is significantly depending on the pelagic larval development. The Early Pleistocene Breiðavík fauna marks the transition of the warm temperate Tjörnes faunas to the subarctic-arctic faunas at the onset of the Pleistocene. |
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