Zur Problematik der Leberzirrhose

Emmrich, R

doi:10.1515/9783112499849

Cited by 2 publications

(2 citation statements)

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“…Yet another group of Silurian species lack the space entirely and this is often coupled with a small overall pygidium size (e.g., K. angelini (Prantl & Přibyl, 1949) (Fig. 2I), K. crenata (Emmrich, 1844) (Ramsköld, 1984, p. 255, fig. 4), K. lindoei Adrain & Ramsköld, 1997, K. parkini (Siveter, 1989.…”

Section: Patterns In Kettneraspismentioning

confidence: 99%

Postcephalic segmentation and spines of the Siluro-Devonian odontopleurine trilobites Leonaspis Richter & Richter and Kettneraspis Prantl & Přibyl, with description of Bruthansovaspis gen. nov. from the Wenlock to Ludlow of the Prague Basin

VAN VIERSEN

2024

Geol. Belg.

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Species of the odontopleurine trilobites Leonaspis Richter & Richter, 1917 and Kettneraspis Prantl & Přibyl, 1949 from the Silurian and the Devonian have been studied. Dorsal tubercle and spine patterns are highly variable and deemed of restricted use. The pygidial segmentation of Leonaspis is consistent among species in the development of a rudimentary inner pleural ridge or wide space between the pleural ridge and the axis. In Kettneraspis, an inner pleural ridge is never developed but the primitive condition is to have a space here. The formation of this ridge and an auxiliary interior border spine pair was arrested prematurely during ontogeny in species assigned to Kettneraspis at present. The type species of the monotypic Rupbachella Alberti, 2021 is regarded as a juvenile Leonaspis. Bruthansovaspis gen. nov. (type species: Acidaspis roemeri Barrande, 1852) is proposed for a Silurian clade of former Kettneraspis species from peri-Gondwana, that are principally distinct in lacking the combination of stunted anterior and macropleural posterior, thoracic segments synapomorphic of Kettneraspis and Leonaspis. The types of Bruthansovaspis roemeri, Bruthansovaspis dormitzeri (Hawle & Corda, 1847), Bruthansovaspis dumortieri (Hawle & Corda, 1847), Kettneraspis propinqua (Barrande, 1852), Kettneraspis lindackeri (Hawle & Corda, 1847) and Bruthansovaspis zenkeri (Hawle & Corda, 1847) (= B. dormitzeri) from the Silurian of the Barrandian, all of which had previously been lumped as dormitzeri, are figured and their classifications revisited. Exceptionally well-preserved odontopleurine material from the Devonian in the Tafilalt (southern Morocco) is described as Kettneraspis freitagi sp. nov. Leonaspis? strix Lütke, 1965 from the Devonian of the Harz Mountains is in need of revision; a previously tentatively assigned pygidium does not belong in that genus.

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Section: Patterns In Kettneraspismentioning

confidence: 99%

Postcephalic segmentation and spines of the Siluro-Devonian odontopleurine trilobites Leonaspis Richter & Richter and Kettneraspis Prantl & Přibyl, with description of Bruthansovaspis gen. nov. from the Wenlock to Ludlow of the Prague Basin

VAN VIERSEN

2024

Geol. Belg.

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“…Exallaspis aff. mutica (Emmrich, 1844): Vokáč et al (2021, p. 75, pl. 6, figs 1-3) Material: Four pygidia, fragmentary fifteen cranidia and two librigenae.…”

Section: Exallaspis Sp (Plate I Figs 4-7)mentioning

confidence: 99%

The Rare Trilobites Exallaspis (Odontopleuridae) and Kosovoproetus? (Tropidocoryphidae) in the Homerian (Silurian) Of The Prague Basin, Bohemian Massif

Hartl

Vokáč

Pavlovič³

et al. 2022

Folia Musei Rerum Naturalium Bohemiae Occidentalis. Geologica Et Paleobiologica

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The deep-water Aulacopleura koninckii Assemblage in the lower Homerian (T. testis Sub-Biozone) “Aulacopleura shales“ strata at the classical ‘Barrande’s pits’ locality on the Černidla hillside at Loděnice in the Prague Basin is supplemented by the addition of two new trilobite taxa, viz. Exallaspis? perunicana sp. n. and Kosovoproetus? aff. praecursor (Přibyl & Vaněk 1987). The palaeogeographic distribution of Exallapis Ramsköld & Chatterton, 1991 is extended by the occurrence of Exallaspis? perunicana sp. n. and the younger Exallaspis sp. in the upper Homerian (the P. parvus – G. nassa Biozone) of the Prague Basin, reflecting the faunal migration between the southern shelf of the Baltica palaeocontinent and the Perunica microcontinent accross the Rheic Ocean. The small dimensions of the K.? aff. praecursor exoskeletons compared to those of K.? praecursor in the bordering shallow-water Liolalax–Sphaerexochus– Cheirurus Assemblage represent another example of adaptive nanism in trilobites of the Aulacopleura-Raphiophorus Biofacies.

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Zur Problematik der Leberzirrhose

Cited by 2 publications

References 0 publications

Postcephalic segmentation and spines of the Siluro-Devonian odontopleurine trilobites Leonaspis Richter & Richter and Kettneraspis Prantl & Přibyl, with description of Bruthansovaspis gen. nov. from the Wenlock to Ludlow of the Prague Basin

Postcephalic segmentation and spines of the Siluro-Devonian odontopleurine trilobites Leonaspis Richter & Richter and Kettneraspis Prantl & Přibyl, with description of Bruthansovaspis gen. nov. from the Wenlock to Ludlow of the Prague Basin

The Rare Trilobites Exallaspis (Odontopleuridae) and Kosovoproetus? (Tropidocoryphidae) in the Homerian (Silurian) Of The Prague Basin, Bohemian Massif

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