An intertidal balanomorph<i>Hexaminius venerai</i>sp. nov. (Austrobalanidae) colonizing a log of<i>Podocarpoxylon</i>from the La Meseta Formation (Eocene), Seymour Island, Antarctica: a glimpse of Antarctic antiquity

Kočí, Tomáš; Vodrážka, Radek; Veselská, Martina Kočová; Buckeridge, John S.

doi:10.1080/08912963.2018.1452206

Cited by 2 publications

(4 citation statements)

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“…(2020) described a barnacle assemblage from Upper Oligocene marls of Kamnik/Košiše and Middle Miocene carbonates at Trbovlje, Central Paratethys of Slovenia. Similarly, wood logs with attached dozens of specimens of Amphibalanus “ communis ” (= Amphibalanus amphitrite amphitrite Darwin, 1854) were observed by Kočí (2019, unpublished data) in the Oligocene of Austria. In these examples, rapid burial by fine sediments permitted the preservation of articulated specimens, often with opercula retained in the orifice.…”

Section: Methodsmentioning

confidence: 53%

“…(2016), where the scalpelliform Stipilepas molerensis Carriol, 2016 and brachylepadomorph Plesiobrachylepas jutlandica Carriol, 2016 were found attached to a Sequoia log; Kočí et al. (2019) described the balanomorph Hexaminius venerai Buckeridge, Kočí, Vodrážka, 2019 attached to fossilized wood ? Podocarpoxylon from Middle Eocene muddy sandstones at Seymour Island (Antarctic Peninsula); Buckeridge et al.…”

Section: Methodsmentioning

confidence: 99%

“…Most of these fossils are from marls and clays, testifying to a quiescent depositional environment. Examples of exceptional barnacle preservation occur in the Eocene Mo Clay of northwest Jutland , where the scalpelliform Stipilepas molerensis brachylepadomorph Plesiobrachylepas jutlandica Carriol, 2016 were found attached to a Sequoia log; Kočí et al (2019) described the balanomorph Hexaminius venerai Buckeridge, Kočí, Similarly, wood logs with attached dozens of specimens of Amphibalanus "communis" (= Amphibalanus amphitrite amphitrite Darwin, 1854) were observed by Kočí (2019, unpublished data) in the Oligocene of Austria. In these examples, rapid burial by fine sediments permitted the preservation of articulated specimens, often with opercula retained in the orifice.…”

Section: Other Substratesmentioning

confidence: 99%

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The first record of a Konservat‐Lagerstätten in which early post‐settlement stages of fossil archaeobalanids (Cirripedia: Balanomorpha) are preserved

et al. 2023

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A diverse sessile barnacle fauna from a Miocene shallow‐water deposit at Dolnja Stara vas in Slovenia is described. It includes the first descriptions of early post settlement juveniles of Actinobalanus sloveniensis attached to mangrove leaves. These represent three distinct growth phases, the earliest being interpreted as being less than 24 h post settlement, the others being 1 to 2 days post settlement. An assessment of their taphonomy is provided. Associated adult balanomorphs are attached to a variety of organic substrates, including mangrove leaves and branches, fragments of the conifers ?Taxodioxylon, Carapoxylon, pine cones, molluscs, and cetacean bones. The barnacles include A. sloveniensis, Amphibalanus venustus, and Perforatus perforatus—many with opercula retained within the shells. A. venustus retains some of the original shell color. This is the second record of barnacle–plant associations from the Central Paratethys from Kamnik and Trbovlje. The paleoecology and paleogeography of the site are discussed.

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Section: Methodsmentioning

confidence: 53%

Section: Methodsmentioning

confidence: 99%

Section: Other Substratesmentioning

confidence: 99%

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The first record of a Konservat‐Lagerstätten in which early post‐settlement stages of fossil archaeobalanids (Cirripedia: Balanomorpha) are preserved

et al. 2023

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“…Three species are known from the La Meseta Formation (Solidobalanus sp. from the Archaeobalanidae, and Austrobalanus macdonaldensis Buckeridge, 1983 plus Hexaminius venerai Buckeridge et al, 2019a from the Austrobalanidae) (see Kočí, et al, 2018 for list of references). Of these three, it is most like either Solidobalanus sp.…”

Section: Resultsmentioning

confidence: 99%

Fossil barnacles from the Antarctic Peninsula: refining ways of exploring the nature of rare and/or delicate specimens employing X-ray Computer Tomography (CT)

et al. 2020

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Assessment of unique and potentially significant fossils may be considerably compromised by surrounding matrix. This paper assesses a fossil barnacle group from the mid to late Eocene of Seymour Island, off the Antarctic Peninsula, that potentially has very significant phylogenetic importance. It discusses why the specimen could be significant, and describes and applies as a proof of concept an advanced imaging technique, using X-ray Computed Tomography (CT), that was effectively employed to confirm systematic taxonomy with virtual 3-D sections through the specimen. In this case, the Antarctic barnacle's complex internal plate morphologies were resolved by advanced 3-D imaging, such that a taxonomic attribution could be made to either the Archaeobalanidae or Austrobalanidae, excluding the initial assessment of Coronulidae, which would have otherwise been allusive.

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An intertidal balanomorphHexaminius veneraisp. nov. (Austrobalanidae) colonizing a log ofPodocarpoxylonfrom the La Meseta Formation (Eocene), Seymour Island, Antarctica: a glimpse of Antarctic antiquity

Cited by 2 publications

References 35 publications

The first record of a Konservat‐Lagerstätten in which early post‐settlement stages of fossil archaeobalanids (Cirripedia: Balanomorpha) are preserved

The first record of a Konservat‐Lagerstätten in which early post‐settlement stages of fossil archaeobalanids (Cirripedia: Balanomorpha) are preserved

Fossil barnacles from the Antarctic Peninsula: refining ways of exploring the nature of rare and/or delicate specimens employing X-ray Computer Tomography (CT)

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