The rudist bivalve genus <i>Gorjanovicia</i> (Radiolitidae, Hippuritoidea) a revision of species based on quantitative analysis of morphological characters

Fenerci-Masse, Mükerrem; Skelton, Peter W.; Massé, Jean-Pierre

doi:10.1111/j.1475-4983.2010.01022.x

Cited by 8 publications

(4 citation statements)

References 16 publications

(14 reference statements)

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“…The radial bands organization, the thick compact outer shell and the ligamentary infolding suggest a similarity of our specimens to Gorjanovicia endrissi as described by FENERCI-MASSE et al (2011). The lack of any well-preserved material only allows an uncertain attribution to Gorjanovicia cf.…”

Section: Discussionsupporting

confidence: 61%

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Stratigraphic and taxonomic considerations on the Late Cretaceous rudist fauna of Aksai Chin (Western Tibet, China) from the De Filippi Collection

Sha¹,

Fabbi²,

Cestari³

et al. 2020

Carnets

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St tr ra at ti ig gr ra ap ph hi ic c a an nd d t ta ax xo on no om mi ic c c co on ns si id de er ra at ti io on ns s o on n t th he e L La at te e C Cr re et ta ac ce eo ou us s r ru ud di is st t f fa au un na a o of f A Ak ks sa ai i C Ch hi in n ((W We es st te er rn n T Ti ib be et t, , C Ch hi in na a)) f fr ro om m t th he e D DE E F FI IL LI IP PP PI I C Co ol ll le ec ct ti io on n Jingeng SHA 1

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Section: Discussionsupporting

confidence: 61%

“…with the only exception of G. cf. endrissi, which is essentially a Campanian taxon (FENERCI-MASSE et al, 2011), other taxa do not provide any additional information, but their age has been constrained based on micropaleontological analysis (see below).…”

Section: Rudistsmentioning

confidence: 99%

Stratigraphic and taxonomic considerations on the Late Cretaceous rudist fauna of Aksai Chin (Western Tibet, China) from the De Filippi Collection

Sha¹,

Fabbi²,

Cestari³

et al. 2020

Carnets

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“…Fifteen characters have been measured for our morphometric study. Similar quantitative parameters have been described for taxonomic description of rudists (e.g., Fenerci-Masse et al 2011). …”

Section: Materials and Datamentioning

confidence: 93%

3D morphometry of polyconitid rudist bivalves based on grinding tomography

Pascual-Cebrian

Hennhöfer

Götz

2012

Facies

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Previous taxonomic studies have shown that polyconitid rudists have a characteristic arrangement of the myocardinal system with an ectomyophoral cavity on the posterior side of the left valve. The specific arrangement of the myophores and associated cavities defines the different genera. However, there has been little research on the three-dimensional spatial distribution and size of the internal features, for want of a technique that is suitable for large and low density-contrast specimens. The tomographic technique described herein is based on automatic serial grinding and serial scanning; the resulting images are treated with biomedical image software. The technique has been applied to a pair of well-preserved specimens of Polyconites verneuili from the Upper Aptian of Spain. Fifteen quantitative characters have been obtained using multiplanar virtual cuts, volume-rendering, and isosurfaces reconstructions. The study revealed the shape, size, and distribution of the ectomyophoral, body and accessory cavities, the lengths and volumes of the teeth, and the arrangement of the myophores. We conclude that this technique facilitates the description of rudist bivalves and is suitable for other fossils; moreover, it has the potential to be used in other fields of geology.

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“…Actually the development of cellular structures in advanced radiolitids shows that this pattern follows a juvenile compact stage through ontogeny [27], heterochrony is thus a more likely interpretation of the compact structure of Auroradiolites. Another case of convergence is illustrated by the genus Gorjanovicia which documents the re-inception of acellular Radiolitidae in the late Cretaceous [28].…”

Section: Cellular Versus Compact Structuresmentioning

confidence: 95%

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2021

IJPBP

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Early Cretaceous Hippuritida clades, requieniide (family Requieniidae) and hippuritide (families Radiolitidae, Polyconitidae, Caprinidae, "Caprinulidae" and Caprinuloideidae), show distinctive myophoral arrangements and shell structures.Nevertheless they share some characters, such as the transverse shell thickening of the myophores of the attached valve which are convergent traits in Lovetchenia (Requieniidae) and Homopleura (Monopleuridae). The bent posterior myophore of the right valve of Pseudotoucasia (Requieniidae) closely resemble the posterior myophore of the left valve of Horiopleura and Polyconites (Polyconitidae). The shell cellular structure is one of the key attributes of the family Radiolitidae (e.g. Eoradiolites)but this structure is also present in some advanced Requieniidae ("Toucasia-Apricardia "group). Canaliculate shell structures are convergent evolutionary traits which are common in the Caprinidae and Caprinuloideidae and also exist in the Polyconitidae and "Caprinulidae". In most of the foregoing canaliculated groups, two trends are well expressed, reflecting parallel evolution: expansion of canals into the entire shell and increasing complexity of canal architecture. Convergent taxa took some advantages by using former innovations. An Albian peak of convergence coincided with the emergence of new clades, which suggests a reset following the mid-Aptian extinction event.

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The rudist bivalve genus Gorjanovicia (Radiolitidae, Hippuritoidea) a revision of species based on quantitative analysis of morphological characters

Abstract: The rudist bivalve genus Gorjanovicia Polšak, 1967 from Istria, Croatia, is currently known from the Coniacian ⁄ Maastrichtian of the peri-Adriatic and Balkan regions and includes 23 nominal species, defined mainly on shell ornamentation and radial bands. However, a re-

Cited by 8 publications

References 16 publications

Stratigraphic and taxonomic considerations on the Late Cretaceous rudist fauna of Aksai Chin (Western Tibet, China) from the De Filippi Collection

Stratigraphic and taxonomic considerations on the Late Cretaceous rudist fauna of Aksai Chin (Western Tibet, China) from the De Filippi Collection

3D morphometry of polyconitid rudist bivalves based on grinding tomography

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