Refinement of apatite atomic structure of albid tissue of Late Devon conodont

Frank-Kamenetskaya, O. V.; Rozhdestvenskaya, I. V.; Rosseeva, Elena; Журавлев, А. В.

doi:10.1134/s1063774514010039

Cited by 18 publications

(14 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unit cell parameter a of euconodonts from their study was found to be higher than paraconodonts and non-conodont phosphatic fauna. We observed a similar trend where the overall unit cell parameter a for our study was higher than paraconodonts but generally within the range of post-Cambrian euconodonts [24,[28][29][30]55]. Interestingly, however, a few outliers from M and S a elements were found to have a parameters that were significantly lower than previously measured euconodonts.…”

Section: Discussionsupporting

confidence: 81%

“…Previous studies also used X-ray diffraction techniques to extract important information on mineralogy and diagenesis of conodont bioapatite [ 24 , 28 – 30 , 55 ]. Notable work by Zhang et al .…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies also used X-ray diffraction techniques to extract important information on mineralogy and diagenesis of conodont bioapatite [24,[28][29][30]55]. Notable work by Zhang et al [29] investigated 19 samples from coniform conodonts using high-resolution X-ray diffraction and found that the crystallinity varied from poorly ordered amorphous structure to more crystalline regions, but did not observe systematic trends related to chemical composition.…”

Section: Discussionmentioning

confidence: 99%

“…The unit cell parameters of biogenic apatite are governed by substitution of anionic complexes into the phosphate site and metal cations into calcium sites [Ca(I) and Ca(II)] within the crystal lattice [55][56][57][58]. The unit cell parameter a of synthesized pure fluorapatite has been found to be significantly lower than natural bioapatite due to substitution of hydroxyl and carbonate ions [28,57].…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Ontogenetic variability in crystallography and mosaicity of conodont apatite: implications for microstructure, palaeothermometry and geochemistry

et al. 2020

View full text Add to dashboard Cite

X-ray diffraction data from Silurian conodonts belonging to various developmental stages of the species Dapsilodus obliquicostatus demonstrate changes in crystallography and degree of nanocrystallite ordering (mosaicity) in both lamellar crown tissue and white matter. The exclusive use of a single species in this study, combined with systematic testing of each element type at multiple locations, provided insight into microstructural and crystallographic differentiation between element type ( S a , S b - c , M ) as well as between juveniles and adults. A relative increase in the unit cell dimensions a / c ratio of nanocrystallites during growth was apparent in areas demonstrating single-crystal behaviour, but no such relationship was seen in dominantly polycrystalline areas. Systematic variations in mosaicity were identified, with mosaicity (as a proxy for disorder) increasing during growth, as well as along elements from tip to base. These results provide potential insight into the integrity of conodont apatite as a recorder of palaeoseawater chemistry, as well as demonstrate the need to consider the influence of ontogeny and element type on the use of conodonts in palaeothermometry and geochemical investigations.

show abstract

Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Ontogenetic variability in crystallography and mosaicity of conodont apatite: implications for microstructure, palaeothermometry and geochemistry

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Rather low trophic level of the middle Palaeozoic conodonts is also supported by signs of predation of fishes (cladoselachian sharks, coelacanth, palaeoniscoid and actinopterygian fishes) on conodonts (Nicoll 1977;Choo et al 2009;Zatoń & Rakociński 2014;Zatoń et al 2017). These data suggest that conodonts occupied trophic levels below of those of fishes.…”

Section: Discussionmentioning

confidence: 82%

Trophic position of some Late Devonian-Carboniferous (Mississippian) conodonts revealed on carbon organic matter isotope signatures: a case study of the East European basin

Журавлев

2020

Geodiversitas

View full text Add to dashboard Cite

An isotopic investigation of organic matter of the Late Devonian-Carboniferous (Mississippian) conodont elements of various morphology was carried out. δ 13 C org values of conodont elements measured in this study range from -32.6‰ to -22.4‰, with an average value of -26.1 ± 4.8‰. The study taxa represent four types of conodont apparatus, which differ one from another by morphology of P1 elements. In spite of apparently different morphology all the studied conodonts possess close δ 13 C org values. Taxonomic control on the carbon isotope composition is insufficient as well. High consistency of the carbon isotope composition of conodont organic matter suggests that the Late Devonian and Carboniferous (Mississippian) conodonts occupied similar trophic levels. Quite low δ 13 C org values in conodont organic matter allow supposing that conodonts were low level consumers, probably seston and plankton feeders. RÉSUMÉPosition trophique de certains conodontes du Dévonien supérieur et du Carbonifère (Mississippian) révélée par des signatures d'isotopes de matière organique carbone : étude de cas du bassin de l'Europe de l'Est. Une étude isotopique de la matière organique d'éléments de conodontes du Dévonien supérieur-Carbonifère (Mississippien) de morphologie différente a été réalisée. Les valeurs de δ 13 C org des éléments de conodontes mesurées dans cette étude vont de -32,6‰ à -22,4‰ avec une valeur moyenne de -26,1 ± 4,8‰. Les taxons étudiés représentent quatre types d'appareils de conodontes, qui diffèrent les uns des autres par la morphologie des éléments P1. Malgré une morphologie apparemment différente, tous les conodontes étudiés possèdent des valeurs proches de δ 13 C org . Le contrôle taxonomique de la composition en isotopes de carbone est également insuffisant. La forte cohérence de la composition en isotopes du carbone de la matière organique des conodontes suggère que les conodontes du Dévonien supérieur et du Carbonifère (Mississippian) occupaient des niveaux trophiques similaires. Des valeurs assez faibles de δ 13 C org dans la matière organique des conodontes permettent de supposer que les conodontes sont de faibles consommateurs, probablement de seston et de plancton.

show abstract

Thermodynamics and Kinetics of Crystallization of Mineral Phases of Vascular Calcificates

Голованова

2019

Lecture Notes in Earth System Sciences

View full text Add to dashboard Cite

Refinement of apatite atomic structure of albid tissue of Late Devon conodont

Cited by 18 publications

References 15 publications

Ontogenetic variability in crystallography and mosaicity of conodont apatite: implications for microstructure, palaeothermometry and geochemistry

Ontogenetic variability in crystallography and mosaicity of conodont apatite: implications for microstructure, palaeothermometry and geochemistry

Trophic position of some Late Devonian-Carboniferous (Mississippian) conodonts revealed on carbon organic matter isotope signatures: a case study of the East European basin

Thermodynamics and Kinetics of Crystallization of Mineral Phases of Vascular Calcificates

Contact Info

Product

Resources

About