Part O, Arthropoda 1, Complete Volume

Harrington, H. James; Weller, J.Marvin; Howell, B. F.; Whittington, H. B.; Sdzuy, Klaus; Schmidt, H.; Stubblefield, C. J.; Richter, R. H.; Richter, E; Lochman-Balk, Christina; Rasetti, F.; Størmer, Lief; Henningsmoen, Gunnar; Poulsen, Christian Bo; Moore, Raymond C.; Jaanusson, Valdar; Tripp, Ronald; Struve, Wolfgang

doi:10.17161/dt.v0i0.5609

Cited by 11 publications

(26 citation statements)

References 10 publications

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“…Harrington et al . (1959) established the presence of a preglabellar field, the small size of the palpebral lobes (situated opposite the anterior half of the glabella) and the presence of a spine on the librigenae as the only diagnostic characters of the cephalon. According to Geyer & Landing (2001), members of the family are generally characterized by a slightly to moderately convex glabella with a subtrapezoidal outline and short, relatively faint glabellar furrows.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…According to Harrington et al . (1959), Agraulos is a ptychopariid with practically effaced cephalic furrows and a long frontal area. Thus, members of the genus are typically smooth and almost featureless and their relation to other agraulid genera is still a matter of discussion.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Harrington et al . (1959) distinguished the former by the presence of a shorter frontal area and relatively well-impressed axial furrows. However, the expression of the furrows is controlled by taphonomic processes and the preservation in shale or limestone.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

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Guzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain

Álvaro

Zamora

Vizcaı̈no³

et al. 2012

Geol. Mag.

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AbstractIn the carbonate-siliciclastic strata of West Gondwana (e.g. in the Montagne Noire, France), the aftermath of the mid Languedocian (mid Cambrian) regression is characterized by a late Languedocian major turnover of trilobite families and a Furongian–early Tremadocian radiation related to the stepwise immigration of trilobite invaders from East Gondwana under persistent transgressive conditions. The scarcity of upper Languedocian fossil accumulations in clayey substrates has inspired the sampling of the palaeogeographically most distal parts of the Iberian Chains (Spain), where diagenetic dissolution of ubiquitous hexactinellid sponge spicules has favoured the formation of siliceous concretions. These have yielded the trilobitesPeronopsiscf.insignis,Oidalagnostus trispinifer,Proampyx difformis(=Proampyx aculeatus),Bailiaspis?glabrata(=Holocephalina agrauloides, by ontogeny),Holasaphuscf.centropygeand a paradoxidid gen. et sp. indet. Despite preservation and sampling biases, the identification of this taphonomic window in offshore clayey substrates of West Gondwana allows the recognition of a strong biogeographical link with Baltica, and the correlation of the global Guzhangian Stage and theSolenopleura?brachymetopaZone of Scandinavia with part of the Mediterranean upper Languedocian Substage.

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Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

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Guzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain

Álvaro

Zamora

Vizcaı̈no³

et al. 2012

Geol. Mag.

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“…Order Redlichiida Richter, 1933 Suborder Redlichiina Moore (in Harrington et al, 1959) Superfamily Redlichiacea Poulsen, 1927Family Redlichiidae Poulsen, 1927 Genus Redlichia (Redlichia) Cossmann, 1902 Type species. -Hoeferia noetlingi Redlich, 1899.…”

Section: Pagetia Taijiangensismentioning

confidence: 99%

Detailed trilobite biostratigraphy across the proposed GSSP for Stage 5 (“Middle Cambrian” boundary) at the Wuliu-Zengjiayan section, Guizhou, China

Sundberg¹,

Zhao²,

Yuan³

et al. 2011

Bull. Geosci.

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Quarrying across a potential GSSP of the base of Cambrian Stage 5/Series 3 at the Wuliu-Zengjianyan section in south China indicates a significant change in trilobite and brachiopod faunas. The Wuliu Quarry spans approximately 4.5 m across the potential boundary, which is the FAD of Oryctocephalus indicus (Reed, 1910) in the Wuliu-Zengjiayan section of the Kaili Formation. Trilobite taxa found consist of one Pagetia, one Redlichia, one Burlingia, two Olenoides, eleven oryctocephalid, and seven ptychopariid species. Non-trilobite taxa found in the Wuliu Quarry, but not described in this publication, include tubular shells, inarticulate and articulate brachiopods, molluscs, echinoderm plates, sponges, algae, acritarchs, and trace fossils. Collected specimens display both flattening, secondary calcite preservation, and tectonic distortion. Many of the species have previously been based on length to width ratios. Given the range of morphologies demonstrated in these collections, several previously named species have been synonymized. Detailed collections from the Wuliu Quarry show that the faunas of the Ovatoryctocara cf. granulata-Bathyonotus holopygus and the O. indicus zones changed in a 20 cm, relatively barren interval. This faunal turnover does not coincide with a lithologic change and suggests that the section would be a good location for the GSSP of the base of Cambrian Stage 5/Series 3.•

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“…Atopidae Hupé, 1954 is a little investigated trilobite family based on Atops Emmons, 1844. Family membership has had a long and contentious history (Howell and Stubblefield, 1950) and constituent genera were regularly included in the Conocoryphidae based on their secondary blindness; this assignment continued beyond Hupe's (1954) erection of the family (Harrington et al, 1959; Korobov, 1973; Jell et al, 1992). In Spain, this genus was doubtfully recognized by Richter and Richter (1941) as Atops ?…”

Section: Introductionmentioning

confidence: 99%

Atopidae (Trilobita) in the upper Marianian (Cambrian Series 2, Stage 4) of Iberia

et al. 2020

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New atopid trilobites are described from the early Cambrian Cumbres beds and Herrerías shale of northern Huelva Province (Andalusia, Spain) and are dated as middle–late Marianian (Cambrian Series 2, Stage 4). New specimens of Atops calanus Richter and Richter, 1941 are described and the Laurentian species Pseudatops reticulatus (Walcott, 1890b) is recognized for the first time in the Mediterranean subprovince. The associated trilobite assemblage studied herein suggests an age close to the base of Cambrian Stage 4.

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Part O, Arthropoda 1, Complete Volume

Abstract: Citation of synonyms is given next fol• lowing record of the type species and if 2 or more synonyms of differing date are recognized, these are arranged in chron• ological order. Objective synonyms are xvi

Cited by 11 publications

References 10 publications

Guzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain

Guzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain

Detailed trilobite biostratigraphy across the proposed GSSP for Stage 5 (“Middle Cambrian” boundary) at the Wuliu-Zengjiayan section, Guizhou, China

Atopidae (Trilobita) in the upper Marianian (Cambrian Series 2, Stage 4) of Iberia

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