High diversity dinoflagellate cyst assemblages from the Late Triassic of southern England: new information on early dinoflagellate evolution and palaeogeography |
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Authors: | Raffaella Bucefalo Palliani Nicoletta Buratti |
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Institution: | Raffaella Bucefalo Palliani [], Earth Sciences Department, Perugia University, Piazza Università1, 06100 Perugia, Italy;Nicoletta Buratti [] Earth Sciences Department, Perugia University, Piazza Università1, 06100 Perugia, Italy |
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Abstract: | Abundant and diverse dinoflagellate cyst assemblages from the Rhaetian of southern England are characterized by the occurrence of a new species of Rhaetogonyaulax, some undescribed taxa and numerous forms with Arctic and Australasian affinities. The dinoflagellate cyst assemblages permit a discussion of the palaeogeographic distribution of dinoflagellate cysts in the Late Triassic. The hypothesis on a Late Triassic migration event of organic walled microplankton from higher latitudes to the Boreal domain is presented. |
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Keywords: | Dinoflagellate cysts Late Triassic palaeogeography |
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