Ammonoid Habitats and Life History

Lukeneder, Alexander

doi:10.1007/978-94-017-9630-9_18

Cited by 50 publications

(57 citation statements)

References 366 publications

(618 reference statements)

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“…The deposits of this area belong to two formations, the stratigraphically older Kartoz Formation (earliest Carnian), and the younger Kaslmlar Formation (Carbonate, Marlstone and Shale member; Lukeneder et al 2012), which reaches from Early to Late Carnian age (Julian 2 -Tuvalian 1). The fossil fauna (Lukeneder & Lukeneder 2014) reported within this work derives from the Kaslmlar Formation with Lower Carnian to Upper Carnian sediments (Julian 2 -Tuvalian 1; Fig. 2).…”

Section: Geological Settingmentioning

confidence: 74%

“…The investigated succession was deposited in an intra-shelf basin of equatorial paleolatitude at the western end of the 'Cimmerian terranes' or 'Cimmerian blocks ' ( engör et al 1984;Scotese et al 1989;Dercourt et al 1993Dercourt et al , 2000Scotese 1998Scotese , 2001Gindl 2000;Lukeneder et al 2012;Lukeneder & Lukeneder 2014). This area was located between the 'old' Paleotethys in the North and the Neotethys in the South during the Late Triassic (Carnian, 228-216 Ma -Gindl 2000;Gradstein et al 2012).…”

Section: Geological Settingmentioning

confidence: 99%

“…2). The section is dated based on conodonts, ammonoids, and halobiids (Lukeneder et al 2012;Lukeneder & Lukeneder 2014). A detailed age assignment follows Krystyn et al (2002) and Gallet et al (2007).…”

Section: Lithology and Faciesmentioning

confidence: 99%

“…The studied successions at A aglyaylabel ( = Kartoz) and Yukarlyaylabel ( = Karaplnar) start with shallow-water limestones of the Kartoz Formation, with thick-shelled bivalves and corals (Lukeneder et al 2012;Lukeneder & Lukeneder 2014;Fig. 2).…”

Section: Lithology and Faciesmentioning

confidence: 99%

“…Lower Carnian faunal elements, exclusively detected at A aglyaylabel and characterized as Kasimlarceltites krystyni, Klipsteinia disciformis and Anasirenites crassicrenulatus (Lukeneder & Lukeneder 2014) indicate a rather isolated but still connective paleoceanographic position of the intrashelf area on the western end of the Cimmerian System.…”

Section: Introductionmentioning

confidence: 95%

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Taphonomic implications from Upper Triassic mass flow deposits: 2-dimensional reconstructions of an ammonoid mass occurrence (Carnian, Taurus Mountains, Turkey)

Mayrhofer¹

2014

Geologica Carpathica

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Ammonoid mass occurrences of Late Triassic age were investigated in sections from A şağlyaylabel and Yukarlyaylabel, which are located in the Taurus Platform-Units of eastern Turkey. The cephalopod beds are almost monospecific, with > 99.9 % of individuals from the ceratitic genus Kasimlarceltites, which comprises more than hundreds of millions of ammonoid specimens. The ontogenetic composition of the event fauna varies from bed to bed, suggesting that these redeposited shell-rich sediments had different source areas. The geographical extent of the mass occurrence can be traced over large areas up to 10 km2. Each of the Early Carnian (Julian 2) ammonoid mass occurrences signifies a single storm (e.g. storm-wave action) or tectonic event (e.g. earthquake) that caused gravity flows and turbidity currents. Three types of ammonoid accumulation deposits are distinguished by their genesis: 1) matrix-supported floatstones, produced by low density debris flows, 2) mixed floatstones and packstones formed by high density debris flows, and 3) densely ammonoid shell-supported packstones which result from turbidity currents. Two-dimensional calculations on the mass occurrences, based on sectioning, reveal aligned ammonoid shells, implying transport in a diluted sediment. The ammonoid shells are predominantely redeposited, preserved as mixed autochthonous/parautochnonous/ allochthonous communities based on biogenic and sedimentological concentration mechanisms ( = in-situ or post-mortem deposited). This taphonomic evaluation of the Kasimlarceltites beds thus reveals new insights into the environment of deposition of the Carnian section, namely that it had a proximal position along a carbonate platform edge that was influenced by a nearby shallow water regime. The Kasimlarceltites-abundance zone is a marker-zone in the study area, developed during the drowning of a shallow water platform, which can be traceable over long distances.

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Section: Geological Settingmentioning

confidence: 74%

Section: Geological Settingmentioning

confidence: 99%

Section: Lithology and Faciesmentioning

confidence: 99%

Section: Lithology and Faciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

See 3 more Smart Citations

Taphonomic implications from Upper Triassic mass flow deposits: 2-dimensional reconstructions of an ammonoid mass occurrence (Carnian, Taurus Mountains, Turkey)

Mayrhofer¹

2014

Geologica Carpathica

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Finite Element Analysis as a Method to Study Molluscan Shell Mechanics

Lemanis

Zlotnikov

2017

Adv Eng Mater

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The clade Mollusca is a highly diverse and disparate group of terrestrial and aquatic invertebrates, the taxon containing over 100 000 known species including some of the most intelligent invertebrate animals. Their shells are exemplar systems in the study of biomechanics, biomineralization, and biomimetics. Research into understanding the superior biomechanical properties of the shell and how these properties relate to the animals ecology have required a diverse range of methods at multiple length scales; one particularly powerful method is finite element analysis. Finite element analysis is a robust engineering method that has a long-standing history in biomechanical research. This review summarizes the application of finite element analysis in the study of both the mechanical properties of different molluscan shell ultrastructures as well as macro-scale modeling of the shell. From the calculation of elastic constants to the origins of the strength of nacre and the relationship between shell folding and ecology, this article provides a window into how finite element analysis can further our understanding of mechanics and functional morphology.

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