Archaeochionelasmus nekvasilovae gen. et sp. nov. (Cirripedia, Balanomorpha, Chionelasmatoidea) from the Bohemian Cretaceous Basin (Czech Republic): the first bona fide Cretaceous neobalanoform

Kočí, Tomáš; Veselská, Martina Kočová; Newman, William A.; Buckeridge, John S.; Sklenář, Jan

doi:10.11646/zootaxa.4294.2.3

Cited by 447 publications

(16 citation statements)

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“…They are common at middle and high latitudes (Raymond & Stetson 1932;Hoskin & Nelson 1969;Milliman 1972;Müller & Milliman 1973;Farrow et al 1978;Hottinger 1983;Domack 1988;Nelson et al 1988;Scoffin 1988;Wilson 1988;Taviani et al 1993;Henrich et al 1995;Frank et al 2014;Buckeridge 2015), but they can also thrive at low-latitudes, especially in nutrient-rich environments (Glynn & Wellington 1983;Carannante et al 1988;Halfar et al 2006;Westphal et al 2010;Michel et al 2011;Reijmer et al 2012;Klicpera et al 2013;Reymond et al 2016). The fossil record of encrusting cirripedes starts in the Cretaceous (if primitive forms like Archaeochionelasmus Kočí, Newman & Buckeridge, 2017 in Kočí et al 2017 are included), but it is only during the Neogene that barnacles became really frequent in the shallowwater environments that they presently master (Darwin 1854;Newman et al 1969;Foster & Buckeridge 1987;Doyle et al 1997;Buckeridge 2015).…”

Section: Introductionmentioning

confidence: 99%

Palaeoenvironmental analysis of the Miocene barnacle facies: case studies from Europe and South America

Coletti¹,

Bosio²,

Collareta³

et al. 2018

Geologica Carpathica

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Acorn barnacles are sessile crustaceans common in shallow-water settings, both in modern oceans and in the Miocene geological record. Barnacle-rich facies occur from polar to equatorial latitudes, generally associated with shallow-water, high-energy, hard substrates. The aim of this work is to investigate this type of facies by analysing, from the palaeontological, sedimentological and petrographical points of view, early Miocene examples from Northern Italy, Southern France and South-western Peru. Our results are then compared with the existing information on both modern and fossil barnacle-rich deposits. The studied facies can be divided into two groups. The first one consists of very shallow, nearshore assemblages where barnacles are associated with an abundant hard-substrate biota (e.g., barnamol). The second one includes a barnacle-coralline algae association, here named “barnalgal” (= barnacle / red algal dominated), related to a deeper setting. The same pattern occurs in the distribution of both fossil and recent barnacle facies. The majority of them are related to very shallow, high-energy, hard-substrate, a setting that represents the environmental optimum for the development of barnacle facies, but exceptions do occur. These atypical facies can be identified through a complete analysis of both the skeletal assemblage and the barnacle association, showing that barnacle palaeontology can be a powerful tool for palaeoenvironmental reconstruction.

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Section: Introductionmentioning

confidence: 99%

Palaeoenvironmental analysis of the Miocene barnacle facies: case studies from Europe and South America

Coletti¹,

Bosio²,

Collareta³

et al. 2018

Geologica Carpathica

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show abstract

“…Dr Kočí kindly provided excellent images of the fossil in 2014 and one of us (ASG) expressed his doubts to him then, and to Dr Newman, as to its affinities, suggesting that it was a molluscan fragment. However, the authors believed it to be a cirripede, with eventual publication (Kočí et al, 2017). An anonymous referee for this publication also suggested that the specimen was part of a rudist.…”

Section: Accepted Manuscriptmentioning

confidence: 96%

“…This find would put the first appearance of the group back by nearly 40 million years, to a time before the first occurrence of putative ancestors of the neobalanomorphs (Gale and Sørensen, 2014). The specimen was used by Kočí et al (2017) as the basis for a reappraisal of the homologies, phylogeny and origin of the balanomorphs. Dr Kočí kindly provided excellent images of the fossil in 2014 and one of us (ASG) expressed his doubts to him then, and to Dr Newman, as to its affinities, suggesting that it was a molluscan fragment.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…After publication of the Kočí et al (2017) paper, ASG contacted PWS, a rudist specialist, who confirmed that it is in fact a rudist fragment. In view of the importance of the discovery of such an early neobalanomorph, we now consider it useful to publish our observations on the specimen and its affinities.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Alae infill the gaps between plates generated by diametric growth (Anderson, 1994). The ala on the rostral margin of the carinomarginal ("CL2" of Kočí et al, 2017) is large in Chionelasmus. The alae display conspicuous regular growth lines, approximately 0.7-1 mm apart.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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The Cretaceous acorn barnacle Archaeochionelasmus nekvasilovae Kočí, Newman and Buckeridge, 2017 (Cirripedia, Neobalanomorpha) is a fragmentary rudist (Bivalvia, Mollusca)

Gale

Skelton

2018

Cretaceous Research

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New and overlooked occurrences of the rarely reported protochelonibiine “turtle” barnacles from the Oligocene and Miocene of Europe

Collareta

Harzhauser

Rasser

2021

PalZ

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We report on two clustering chelonibiid shells from Rupelian deposits of southwestern Germany. One of these specimens displays a tripartite rostral complex and disparietal radii that indicate the Oligocene species Protochelonibia melleni, which was known so far from isolated compartments only. A literature review reveals two additional, overlooked records of the rarely reported genus Protochelonibia, coming respectively from the Burdigalian of France and the Langhian of Austria. Both these historical finds likely represent the Miocene species Protochelonibia submersa. All together, these occurrences support the notion that the protochelonibiines had acquired a broad distribution as early as in Rupelian times, when P. melleni occurred along the proto-Gulf of Mexico and in the Western Paratethys. Both P. melleni and P. submersa grew in form of peltate shells that evoke a superficial adhesion to 1 some kind of quickly moving hosts. The outer wall of the abraded German colony of P. melleni is comprised of pillar-like blocks of shelly material. In other coronuloids, similar yet more prominent septa abut outward to form T-shaped flanges and intervening longitudinal canals that facilitate the grasping of various kinds of penetrable substrates. Whether the diminutive external longitudinal parietal septa of P. melleni represent an early stage in the evolution of the coronuloid shell architecture or vestigial structures cannot be ascertained, but the former hypothesis seems to be more likely. New additions to the pre-Pliocene fossil record of Coronuloidea will hopefully clarify this and other crucial aspects of the origin and early evolution of the turtle and whale barnacles.

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Archaeochionelasmus nekvasilovae gen. et sp. nov. (Cirripedia, Balanomorpha, Chionelasmatoidea) from the Bohemian Cretaceous Basin (Czech Republic): the first bona fide Cretaceous neobalanoform

Cited by 447 publications

References 0 publications

Palaeoenvironmental analysis of the Miocene barnacle facies: case studies from Europe and South America

Palaeoenvironmental analysis of the Miocene barnacle facies: case studies from Europe and South America

The Cretaceous acorn barnacle Archaeochionelasmus nekvasilovae Kočí, Newman and Buckeridge, 2017 (Cirripedia, Neobalanomorpha) is a fragmentary rudist (Bivalvia, Mollusca)

New and overlooked occurrences of the rarely reported protochelonibiine “turtle” barnacles from the Oligocene and Miocene of Europe

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