any of the extinct group of sea-dwelling cephalopod molluscs with coiled and chambered shells
Examples of 'ammonoid' in a sentence
ammonoid
The ammonoid assemblages in these rock units are reviewed.
D. Korn, R. Feist 2007, 'Early Carboniferous ammonoid faunas and stratigraphy of the Montagne Noire (France)',Fossil Recordhttp://www.foss-rec.net/10/99/2007/fr-10-99-2007.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
They represent one of the most diverse ammonoid faunas known from this time interval.
V. Ebbighausen, D. Korn, J. Bockwinkel 2010, 'The ammonoids from the Dalle à Merocanites of Timimoun (Late Tournaisian–EarlyViséan; Gourara, Algeria)', Fossil Recordhttp://www.foss-rec.net/13/153/2010/fr-13-153-2010.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Most ammonoid cephalopods have shell forms making postmortem transport unlikely.
Margaret M. Yacobucci 2018, 'Postmortem transport in fossil and modern shelled cephalopods', PeerJhttps://peerj.com/articles/5909.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
They represent the most diverse ammonoid fauna known from this time interval.
J. Bockwinkel, D. Korn, V. Ebbighausen 2010, 'The ammonoids from the Argiles de Timimoun of Timimoun (Early and Middle Viséan; Gourara,Algeria)', Fossil Recordhttp://www.foss-rec.net/13/215/2010/fr-13-215-2010.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Two-dimensional calculations on the mass occurrences, based on sectioning, reveal aligned ammonoid shells, implying transport in a diluted sediment.
Mayrhofer Susanne, Mayrhofer Susanne 2014, 'Taphonomic implications from Upper Triassic mass flow deposits: 2-dimensional reconstructionsof an ammonoid mass occurrence (Carnian, Taurus Mountains, Turkey)', Geologica Carpathicahttp://www.degruyter.com/view/j/geoca.2014.65.issue-5/geoca-2014-0024/geoca-2014-0024.xml?format=INT. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The ammonoids occur in three successive assemblages and are the richest ammonoid faunas of the time interval worldwide.
D. Korn, J. Bockwinkel, V. Ebbighausen 2010, 'The ammonoids from the Argiles de Teguentour of Oued Temertasset (early Late Tournaisian;Mouydir, Algeria)', Fossil Recordhttp://www.foss-rec.net/13/35/2010/fr-13-35-2010.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)