A new chondrichthyan from the Wenlock, Lower Silurian, of Baillie-Hamilton Island, the Canadian Arctic

Märss, Tiiu; Gagnier, Pierre-Yves

doi:10.1671/0272-4634(2001)021[0693:ancftw]2.0.co;2

Cited by 21 publications

(15 citation statements)

References 9 publications

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“…It has simplified identification of surface sculpture, clarified its functionality, and improved analysis of ontogenic development of scales (e.g. Furthermore, SEM has revealed the finest sculptural elements, which were not visible previously owing to their small dimensions and are referred to as ultrasculpture (Märss and Gagnier 2001). Many authors have stressed that SEM study facilitates the application of sculptural elements as taxonomic features in fish systematics (e.g.…”

Section: Introductionmentioning

confidence: 99%

The sculpture and morphology of postcranial dermal armor plates and associated bones in gasterosteiforms and syngnathiforms inhabiting Estonian coastal waters

et al. 2011

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Lees, J., Märss, T., Wilson, M. V. H., Saat, T. and Š pilev, H. 2012. The sculpture and morphology of postcranial dermal armor plates and associated bones in gasterosteiforms and syngnathiforms inhabiting Estonian coastal waters. -Acta Zoologica (Stockholm) 93: 422-435.Five fish species inhabiting Estonian coastal waters (Gasterosteus aculeatus L., Pungitius pungitius (L.), and Spinachia spinachia (L.) of the order Gasterosteiformes and Syngnathus typhle L. and Nerophis ophidion (L.) of the order Syngnathiformes) are described on the basis of the sculpture and morphology of their postcranial dermal armor plates, as revealed and illustrated by SEM images. This study shows that the shapes of these superficial skeletal elements vary by species as well as by their position on the body, whereas the sculpture on the bones is taxon specific. The detailed features allow the identification of isolated fossil and subfossil remains and show promise for future systematics studies.

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Section: Introductionmentioning

confidence: 99%

The sculpture and morphology of postcranial dermal armor plates and associated bones in gasterosteiforms and syngnathiforms inhabiting Estonian coastal waters

et al. 2011

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“…Mongolepis , Elegestolepis , Pilolepis , Kannathalepis ; Karatajute‐Talimaa 1973; Thorsteinsson 1973; Karatajute‐Talimaa et al . 1990; Märss and Gagnier 2001; Turner 2004) and microscopic bicuspid teeth (Turner & Miller in press; H. Botella, personal communication, February 2008). Based on this fossil record, a minimum date of c.440 million years can be proposed for the divergence of chondrichthyans and osteichthyans.…”

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confidence: 99%

The braincase of the chondrichthyanDoliodusfrom the Lower Devonian Campbellton Formation of New Brunswick, Canada

2009

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“…1990; Karatajuté‐Talimaa and Novitskaya 1992; Karatajuté‐Talimaa 1995, 1997; Sansom et al . 2000; Märss and Gagnier 2001; Märss et al . 2002, 2006; Turner 2004) age.…”

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Enameloid microstructure in the oldest known chondrichthyan teeth

2009

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Botella, H., Donoghue, P.C.J and Martínez-Pérez, C. 2009. The enameloid microstructure of the oldest known chondrichthyan teeth. -Acta Zoologica (Stockholm) 90 (Suppl. 1): 103-108Previous studies on tooth enameloid microstructure in several chondrichthyan taxa spanning the phylogeny of the group provided support for the homology of chondrichthyan tooth enameloid. This hypothesis requires that a single crystallite enameloid (SCE) monolayer must be present in the teeth of the most primitive chondrichthyan. However, the dental microstructure of the earliest sharks has yet to be investigated. We have studied the tooth enameloid microstructure of the two oldest tooth-bearing shark species currently known, Leonodus carlsi Mader (1986) and Celtiberina maderi Wang (1993), from the lowermost Lochkovian (Lower Devonian) of Spain. Our study demonstrates the presence of a SCE monolayer in the teeth of both species. These results show that a superficial cap of SCE is present in the oldest shark teeth known, which suggest its presence in the most basal chondrichthyans.

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A new chondrichthyan from the Wenlock, Lower Silurian, of Baillie-Hamilton Island, the Canadian Arctic

Cited by 21 publications

References 9 publications

The sculpture and morphology of postcranial dermal armor plates and associated bones in gasterosteiforms and syngnathiforms inhabiting Estonian coastal waters

The sculpture and morphology of postcranial dermal armor plates and associated bones in gasterosteiforms and syngnathiforms inhabiting Estonian coastal waters

The braincase of the chondrichthyanDoliodusfrom the Lower Devonian Campbellton Formation of New Brunswick, Canada

Enameloid microstructure in the oldest known chondrichthyan teeth

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