Ontogeny, morphology and pedicle attachment of stenothecoids from the middle Cambrian of North Greenland (Laurentia)

Peel, John S.

doi:10.3140/bull.geosci.1839

Cited by 3 publications

(5 citation statements)

References 33 publications

(61 reference statements)

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“…S. elongata is rare in GGU sample 271492, but the distinctive grooves on the internal mould, corresponding to ridges on the interior surface of the shell, perpendicular to the margin (Fig. 5H) compare well with material from the Mount Whyte Formation of British Columbia (Rasetti 1954;Yochelson 1969;Peel 2021c). • 79 Middle Cambrian molluscs from North Greenland al.…”

Section: Phylum Uncertainmentioning

confidence: 56%

“…Additionally, comarginal channels are well-developed distally, although typically absent in Vendrascospira troelseni. Specimens of Davidonia taconica illustrated by Skovsted (2004) from the Bastion Formation of North-East Greenland, and by Landing & Bartowski (1996) from the Browns Pond Formation of New York State, have a more steeply inclined supra-apical surface and more strongly developed channeling of the surface of the internal mould than the specimens from northern Lauge Koch Land (Peel 2021c).…”

Section: Diagnosis As For Genusmentioning

confidence: 95%

“…Ironically, the isostrophically coiled Protowenella was transferred to Hyolitha by Peel (2021a) following the description of an inplace operculum of orthothecid type. The bivalved stenothecoids, which Yochelson (1968Yochelson ( , 1969 established as a new class of molluscs, are now accepted as being more closely related to brachiopods on account of their inferred pedicle attachment (Rozov 1984;Johnston 2019;Peel 2021c;Johnston & Streng 2021a).…”

Section: Geological Settingmentioning

confidence: 99%

“…Class Stenothecoida Yochelson, 1968 Discussion. The bivalved stenothecoids were established as a new class of molluscs by Yochelson (1968Yochelson ( , 1969 but their inferred pedicle attachment to the substrate promotes a closer relationship to brachiopods (Rozov 1984;Johnston 2019;Peel 2021c;Johnston & Streng 2021a). Rozov (1984) Discussion.…”

Section: Phylum Uncertainmentioning

confidence: 99%

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An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

Carnevale¹,

Schwarzhans²,

Schrøder³

et al. 2022

bgsd

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A conger eel (Anguilliformes, Congridae) is described from the lower Lutetian concretionary nodules of the Lillebælt Clay Formation exposed at Trelde Næs, eastern Jutland, based on two partially complete articulated cranial skeletons. One of the cranial specimens exhibits an otolith void from which a cast was taken, used by Schwarzhans (2007) to describe the extinct Pseudoxenomystax treldeensis, which is placed herein within the new genus Smithconger gen. nov. Smithconger treldeensis (Schwarzhans, 2007) is characterized by well-developed lateral processes on the frontals, supraoccipital crest absent, sphenotic spine rather large, anteriorly pointed and exposed on the flattened surface of the skull roof, otic bullae considerably reduced, maxilla almost straight and distally pointed, maxillary and dentary teeth numerous and arranged in multiple rows, dentary with slightly convex ventral profile, opercle with smooth posterior margin and subopercle short. The otoliths of Smithconger treldeensis show high dorsal rim, broad and deep dorsal depression, no ventral furrow, sulcus straight, shallow, centrally positioned with anteriorly reduced colliculum, and ostial channel at anterior tip of colliculum short, not reaching the predorsal rim. The otolith-based species Bathycongrus waihaoensis Schwarzhans, 2019 from the Kaiatan (Bartonian/Priabonian) of New Zealand is also assigned to the genus Smithconger. Smithconger is tentatively referred to the congrid subfamily Congrinae due to the lack of hypohyals in the hyoid bar. This new Eocene genus of conger eel shows a certain degree of similarity with the extant Bassanago. The diversity and relationships of other Eocene congrids is also briefly discussed.

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Section: Phylum Uncertainmentioning

confidence: 56%

Section: Diagnosis As For Genusmentioning

confidence: 95%

Section: Geological Settingmentioning

confidence: 99%

Section: Phylum Uncertainmentioning

confidence: 99%

See 2 more Smart Citations

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

Carnevale¹,

Schwarzhans²,

Schrøder³

et al. 2022

bgsd

View full text Add to dashboard Cite

show abstract

“…Trilobite faunas from the Henson Gletscher Formation have a dominantly Laurentian character but the assemblages include cosmo politan agnostoids and other taxa that are important for international correlation with Siberia, the Altai Sayan foldbelt and South China (Babcock 1994, Robison 1994, Blaker & Peel 1997, Geyer & Peel 2011. Elements of the diverse associated fauna were described by Clausen & Peel (2012), Peel et al (2016), Peel (2017Peel ( , 2019Peel ( , 2021Peel ( , 2022 and Peel & Kouchinsky (2022).…”

Section: Background and Methodsmentioning

confidence: 99%

A priapulid larva from the middle Cambrian (Wuliuan Stage) of North Greenland (Laurentia)

Peel¹

2022

Bull. Geosci.

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Unusual diagenesis of Cambrian chancelloriids from Greenland and Siberia

Peel,

Kouchinsky

2024

Alcheringa: An Australasian Journal of Palaeontology

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Ontogeny, morphology and pedicle attachment of stenothecoids from the middle Cambrian of North Greenland (Laurentia)

Cited by 3 publications

References 33 publications

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

An Eocene conger eel (Teleostei, Anguilliformes) from the Lillebælt Clay Formation, Denmark

A priapulid larva from the middle Cambrian (Wuliuan Stage) of North Greenland (Laurentia)

Unusual diagenesis of Cambrian chancelloriids from Greenland and Siberia

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