Unusual pitted Ordovician brachiopods from the East Baltic: the significance of coarsely pitted ornamentations in linguliforms

Holmer, Lars E.; Popov, Leonid E.; Pour, Mansoureh Ghobadi; Zhang, Zhiliang

doi:10.1002/spp2.1080

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…Wright (1981) discussed the development of pits in Dictyonina , noting an increase in breadth and a reduction of definition with age. The formation and function of the coarsely pitted ornamentation in Ordovician linguliform brachiopods has been extensively discussed by Holmer et al (2017), however, those for Cambrian paterinides still remains poorly understood.…”

Section: Systematic Paleontologymentioning

confidence: 99%

Brachiopods from the Latham Shale Lagerstätte (Cambrian Series 2, Stage 4) and Cadiz Formation (Miaolingian, Wuliuan), California

et al. 2021

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A moderately diverse assemblage of brachiopods from the Latham Shale Lagerstätte (Cambrian Series 2, upper Stage 4) and the upper Cadiz Formation (Miaolingian, Wuliuan), California is described in detail for the first time. The fauna includes both linguliform and rhynchonelliform brachiopods—Hadrotreta primaea (Walcott, 1902), Paterina prospectensis (Walcott, 1884), Dictyonina pannula (White, 1874), and Mickwitzia occidens Walcott, 1908; and Nisusia fulleri Mount, 1981 and Wimanella highlandensis (Walcott, 1886), respectively—together with olenellid trilobites and hyolithids. The fauna differs from other Cambrian Konservat-Lagerstätten (notably Cambrian Series 2 Chengjiang and Guanshan Lagerstätten, eastern Yunnan) in that the brachiopod shell valves in many cases are still preserved with their original mineralization. Moreover, the excellently preserved shale-hosted valves even include cases with exquisite epithelial cell molds, otherwise only seen in acid-etched material from carbonate rocks. The pitted ornamentation in D. pannula closely resembles that described from Ordovician linguliforms. The unusual preservation of N. fulleri provides important clues for ancestral composition of the brachiopod shell. The two articulated rhynchonelliform species probably represent the oldest records of this group from the west Laurentia. The fauna could also represent the earliest onset of the transition from the Cambrian Evolutionary Fauna (CEF) to the Paleozoic Evolutionary Fauna (PEF).

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Section: Systematic Paleontologymentioning

confidence: 99%

Brachiopods from the Latham Shale Lagerstätte (Cambrian Series 2, Stage 4) and Cadiz Formation (Miaolingian, Wuliuan), California

et al. 2021

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“…1994), Avalonia (Wright 1963; Wright & McClean 1991), Laurentia (Holmer 2000; Cocks 2008; Holmer et al . 2017 b ), Kazakh terranes (Popov 2000 a , b ; Popov et al . 2000, 2007; Popov & Cocks 2006, 2014), Perunica (Mergl 1998, 2012) and Gondwana (Percival 1978; Percival et al .…”

Section: Deep‐water Katian Linguliform Faunas: a Global Perspectivementioning

confidence: 99%

“…2007; Cocks 2008; Holmer et al . 2017 b ; Colmenar et al . 2018), whereas those associations with higher diversity are mainly distributed in relatively deep‐water environments (Wright 1963; Percival 1978; Holmer 1986; Wright & McClean 1991; Popov et al .…”

Section: Deep‐water Katian Linguliform Faunas: a Global Perspectivementioning

confidence: 99%

Late Ordovician (Katian) linguliform microbrachiopods from north‐eastern Yunnan, South China

Chen

Huang

et al. 2021

Papers in Palaeontology

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Linguliform brachiopods are a minor but distinctive component of the Palaeozoic Evolutionary Fauna. However, there is no formal research on Katian (Late Ordovician) linguliform microbrachiopods in South China. Fossils from the 'Pagoda', 'Linhsiang' and Daduhe formations, Wanhe section of Yunnan Province, South China, provide a unique opportunity to bridge the gap. Here, we report and systematically describe, for the first time, a deep-water Katian linguliform microbrachiopod association, including 13 species assigned to nine genera, namely Paterula cf. numerosa Popov,

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The brachiopod faunas from the Fezouata Shale (Lower Ordovician; Tremadocian–Floian) of the Zagora area, Anti‐Atlas, Morocco: evidence for a biodiversity hub in Gondwana

Candela,

Harper,

Mergl

2024

Papers in Palaeontology

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Since the early 2000s, the discovery of fossils and their collection from the Fezouata Shale has accelerated; enabling us to understand the faunas more thoroughly. The brachiopod fauna has not been investigated for the past 50 years, and we present here the results of our recent studies. From the material (c. 350 samples), 30 species were identified and assigned to 23 genera. Among these, one new genus (Tinzoulinorthis) and four new species (Wosekella maghribi, Rafanoglossa inversa, Orbithele tazagurta, Lacunites punctum) are erected; one taxon is recognized at the family level. The fauna described from the upper Tremadocian horizons is more diverse than those in the Floian. The former is characterized by a high γ‐diversity, although at the horizon level the α‐diversity is low to medium. This fauna is typical of high‐energy, shallow‐water, unstable environmental conditions, in which long‐lived communities were prevented from developing into climax communities, and the succession of opportunists were regularly smothered in situ and killed by storm deposits. Multivariate analyses of the faunas indicate that the Tremadocian fauna, characterized by many endemic taxa, has closer affinities with faunas from peri‐Gondwanan terranes, in particular Bohemia. The Tremadocian Fezouata fauna is very rich in taxon first occurrences, which, coupled with a high γ‐diversity, suggest that it may have been a diversity hub. In contrast, the Floian Fezouata fauna not only shows stronger connections with Bohemia and the Montagne Noire, it also has links with the South Urals and Baltica, reflecting the changing Early Ordovician palaeogeography.

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Unusual pitted Ordovician brachiopods from the East Baltic: the significance of coarsely pitted ornamentations in linguliforms

Cited by 6 publications

References 23 publications

Brachiopods from the Latham Shale Lagerstätte (Cambrian Series 2, Stage 4) and Cadiz Formation (Miaolingian, Wuliuan), California

Brachiopods from the Latham Shale Lagerstätte (Cambrian Series 2, Stage 4) and Cadiz Formation (Miaolingian, Wuliuan), California

Late Ordovician (Katian) linguliform microbrachiopods from north‐eastern Yunnan, South China

The brachiopod faunas from the Fezouata Shale (Lower Ordovician; Tremadocian–Floian) of the Zagora area, Anti‐Atlas, Morocco: evidence for a biodiversity hub in Gondwana

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