The thoracican cirripede genus Concinnalepas Gale, 2014 (Crustacea) from the Middle and Upper Jurassic of southern England and northern France

Andy S. Gale

doi:10.1016/j.pgeola.2021.01.007

The thoracican cirripede genus Concinnalepas Gale, 2014 (Crustacea) from the Middle and Upper Jurassic of southern England and northern France

Andy S. Gale

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Abstract

New material of the cirripede genus Concinnalepas is described from the Kimmeridge Clay (Tithonian) of Dorset (UK) and the Marnes de Port (Bathonian) of Port-en-Bessin in Normandy (France). Articulated specimens of C. costata (Withers, 1928), attached to driftwood from Kimmeridge, provide hitherto unknown details of tiered lateral plate formation in the species, and Concinnalepas bessinensis sp. nov. and C. rugosa sp. nov. are described from Normandy and Dorset, respectively. Concinnalepas bessinensis sp. nov. is the oldest calcite-shelled cirripede known to date. A review of the distribution of Jurassic calcareous cirripedes demonstrates that pre-Kimmeridgian records are very sparse and scattered and the early evolutionary history of the group is poorly known. The late Kimmeridgian and Tithonian saw a radiation of the Family Zeugmatolepadidae and a great increase in abundance of cirripedes that mostly lived as epiplankton, attached to driftwood and ammonite shells.

Original language	English
Pages (from-to)	332-345
Journal	Proceedings of the Geologists' Association
Volume	132
Issue number	3
Early online date	26 Apr 2021
DOIs	https://doi.org/10.1016/j.pgeola.2021.01.007
Publication status	Published - 1 Jun 2021

Keywords

Calcareous cirripedes
Jurassic
taxonomy
new species

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10.1016/j.pgeola.2021.01.007

The thoracican cirripedeAccepted author manuscript (Post-print), 4.08 MBLicence: CC BY-NC-ND

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title = "The thoracican cirripede genus Concinnalepas Gale, 2014 (Crustacea) from the Middle and Upper Jurassic of southern England and northern France",

abstract = "New material of the cirripede genus Concinnalepas is described from the Kimmeridge Clay (Tithonian) of Dorset (UK) and the Marnes de Port (Bathonian) of Port-en-Bessin in Normandy (France). Articulated specimens of C. costata (Withers, 1928), attached to driftwood from Kimmeridge, provide hitherto unknown details of tiered lateral plate formation in the species, and Concinnalepas bessinensis sp. nov. and C. rugosa sp. nov. are described from Normandy and Dorset, respectively. Concinnalepas bessinensis sp. nov. is the oldest calcite-shelled cirripede known to date. A review of the distribution of Jurassic calcareous cirripedes demonstrates that pre-Kimmeridgian records are very sparse and scattered and the early evolutionary history of the group is poorly known. The late Kimmeridgian and Tithonian saw a radiation of the Family Zeugmatolepadidae and a great increase in abundance of cirripedes that mostly lived as epiplankton, attached to driftwood and ammonite shells.",

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N2 - New material of the cirripede genus Concinnalepas is described from the Kimmeridge Clay (Tithonian) of Dorset (UK) and the Marnes de Port (Bathonian) of Port-en-Bessin in Normandy (France). Articulated specimens of C. costata (Withers, 1928), attached to driftwood from Kimmeridge, provide hitherto unknown details of tiered lateral plate formation in the species, and Concinnalepas bessinensis sp. nov. and C. rugosa sp. nov. are described from Normandy and Dorset, respectively. Concinnalepas bessinensis sp. nov. is the oldest calcite-shelled cirripede known to date. A review of the distribution of Jurassic calcareous cirripedes demonstrates that pre-Kimmeridgian records are very sparse and scattered and the early evolutionary history of the group is poorly known. The late Kimmeridgian and Tithonian saw a radiation of the Family Zeugmatolepadidae and a great increase in abundance of cirripedes that mostly lived as epiplankton, attached to driftwood and ammonite shells.

AB - New material of the cirripede genus Concinnalepas is described from the Kimmeridge Clay (Tithonian) of Dorset (UK) and the Marnes de Port (Bathonian) of Port-en-Bessin in Normandy (France). Articulated specimens of C. costata (Withers, 1928), attached to driftwood from Kimmeridge, provide hitherto unknown details of tiered lateral plate formation in the species, and Concinnalepas bessinensis sp. nov. and C. rugosa sp. nov. are described from Normandy and Dorset, respectively. Concinnalepas bessinensis sp. nov. is the oldest calcite-shelled cirripede known to date. A review of the distribution of Jurassic calcareous cirripedes demonstrates that pre-Kimmeridgian records are very sparse and scattered and the early evolutionary history of the group is poorly known. The late Kimmeridgian and Tithonian saw a radiation of the Family Zeugmatolepadidae and a great increase in abundance of cirripedes that mostly lived as epiplankton, attached to driftwood and ammonite shells.

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KW - taxonomy

KW - new species

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DO - 10.1016/j.pgeola.2021.01.007

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VL - 132

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JO - Proceedings of the Geologists' Association

JF - Proceedings of the Geologists' Association

IS - 3

ER -

The thoracican cirripede genus Concinnalepas Gale, 2014 (Crustacea) from the Middle and Upper Jurassic of southern England and northern France

Abstract

Keywords

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