The evolution of the heteromorph and monomorph early cretaceous ammonites of the suborder Ancyloceratina Wiedmann

Михайлова, И. А.; Baraboshkin, E. Yu.

doi:10.1134/s0031030109050086

Cited by 17 publications

(15 citation statements)

References 12 publications

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“…As it was hypothesized for the ammonite [97], [98], [99], we can argue that the unwinding of the shell should optimize the energy dispenses for locomotion by the transition from an helical swim, observed in Limacina species [100], to a more rectilinear swim as seen for Creseis [95]. Later, the locomotion performance was improved with the innovation of lateral ridges and their extension (i.e.…”

Section: Discussionmentioning

confidence: 68%

Phylogenetic Analysis of Thecosomata Blainville, 1824 (Holoplanktonic Opisthobranchia) Using Morphological and Molecular Data

et al. 2013

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Thecosomata is a marine zooplankton group, which played an important role in the carbonate cycle in oceans due to their shell composition. So far, there is important discrepancy between the previous morphological-based taxonomies, and subsequently the evolutionary history of Thecosomata. In this study, the remarkable planktonic sampling of TARA Oceans expedition associated with a set of various other missions allowed us to assess the phylogenetic relationships of Thecosomata using morphological and molecular data (28 S and COI genes). The two gene trees showed incongruities (e.g. Hyalocylis, Cavolinia), and high congruence between morphological and 28S trees (e.g. monophyly of Euthecosomata). The monophyly of straight shell species led us to reviving the Orthoconcha, and the split of Limacinidae led us to the revival of Embolus inflata replacing Limacina inflata. The results also jeopardized the Euthecosomata families that are based on plesiomorphic character state as in the case for Creseidae which was not a monophyletic group. Divergence times were also estimated, and suggested that the evolutionary history of Thecosomata was characterized by four major diversifying events. By bringing the knowledge of palaeontology, we propose a new evolutionary scenario for which macro-evolution implying morphological innovations were rhythmed by climatic changes and associated species turn-over that spread from the Eocene to Miocene, and were shaped principally by predation and shell buoyancy.

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Section: Discussionmentioning

confidence: 68%

Phylogenetic Analysis of Thecosomata Blainville, 1824 (Holoplanktonic Opisthobranchia) Using Morphological and Molecular Data

et al. 2013

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“…35), "Hemihoplitidae [are] derived from Pseudothurmannia and perhaps from other Crioceratitidae genera with similar suture". Despite the large stratigraphic gap between the last Crioceratitidae (Late Hauterivian) and the first Hemihoplitidae (early Late Barremian), WIEDMANN (followed by IMMEL, 1979, and more recently by KLIN-GER &KENNEDY, 1992, andMIKHAILOVA &BARA-BOSHKIN, 2009) classified the forms of the "barremense" KILIAN, 1895 / alpinum d'ORBIGNY, 1850 group (here Gassendiceras) into the genus Crioceratites LÉVEILLÉ, 1837. The former species are supposed to be derived from the latter by the increasingly tight coiling of the shell.…”

Section: The Literature Hypothesesmentioning

confidence: 99%

“…The Hemihoplitidae are currently under revision (D.B.) and several contributions have already been published (BERT & DELANOY, 2000, 2009BERT, 2012BERT, , 2013BERT & BERSAC, 2012, 2013BERT et al, 2006BERT et al, , 2008BERT et al, , 2009BERT et al, , 2010BERT et al, , 2011BERT et al, , 2013. These works helped to recognise three major developments for this family.…”

Section: Introductionmentioning

confidence: 99%

Origin of the Tethyan Hemihoplitidae tested with cladistics (Ancyloceratina, Ammonoidea, Early Cretaceous): an immigration event?

Bert

Bersac²

2014

Carnets Geol.

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Abstract:The Late Barremian Hemihoplitidae (Ancyloceratina, Ammonoidea) are widely known in the northern Tethyan Margin and the Essaouira-Agadir Basin (Morocco). Their rapid evolution and diversification make them one of the key groups for that period, but their origin remains poorly known and several competing hypotheses have been published. These hypotheses are tested here with cladistic analysis in order to reject those receiving the least support and discuss those well supported. The analysis discards the Crioceratitidae, Emericiceratidae (Emericiceras and Honnoratia) and Toxancyloceras as stem-groups of the Hemihoplitidae (Gassendiceras). The Toxancyloceras appear instead to be a sister-taxon of the Moutoniceras, so we propose the latter to be classified with the Ancyloceratidae rather than with the Heteroceratidae. The best supported hypothesis assumes that the Hemihoplitidae first appeared suddenly in the Essaouira-Agadir Basin at the end of the Early Barremian from small populations of Boreal Paracrioceras. These latter could have migrated southward episodically before invading the northern Tethyan margin at the beginning of the Late Barremian. As a consequence, the Paracrioceratidae fam. nov. is proposed to include the Boreal groups Fissicostaticeras / Paracrioceras / Parancyloceras, and Gassendiceras essaouirae sp. nov. is proposed as a new name for the Moroccan endemic "Barrancyloceras" maghrebiense sensu COMPANY et al., 2008, non IMMEL, 1978 Key Words: Ammonites; Hemihoplitidae; Barremian; cladistics; allopatry; founder effect; palaeobiogeography. Résumé : L'origine des Hemihoplitidae téthysiens testée par la cladistique (Ancyloceratina, Ammonoidea, Crétacé inférieur) : un événement migratoire ?.-Les Hemihoplitidae du Barré-mien supérieur (Ancyloceratina, Ammonoidea) sont connus sur la plus grande partie de la marge Nord Téthysienne et dans le Bassin de Essaouira-Agadir (Maroc). Leur évolution et leur diversification rapide en font un des groupes clés pour cette période, mais leur origine reste peu connue et plusieurs hypothèses contradictoires ont été développées dans la littérature. Ces hypothèses sont testées ici par une analyse cladistique afin d'écarter les moins étayées d'entre elles et de discuter les meilleures. L'analyse écarte les Crioceratitidae, les Emericiceratidae (Emericiceras et Honnoratia) et les Toxancyloceras en tant que groupe-souche pour les (Gassendiceras). D'autre part, les Toxancyloceras apparaissent être taxon-frêre des Moutoniceras, aussi est-il proposé de classer ces derniers parmi les Ancyloceratidae plutôt que dans les Heteroceratidae. L'hypothèse la mieux soutenue suggère que les Hemihoplitidae seraient initialement apparus soudainement à la fin du Barrémien inférieur dans le Bassin d'EssaouiraAgadir à partir de petites populations de Paracrioceras boréaux. Ces derniers auraient pu migrer épisodiquement vers le Sud avant d'envahir la marge Nord-Téthysienne au début du Barrémien supérieur. En conclusion, la Famille des Paracrioceratidae fam. nov. est proposée pour individ...

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“…the origin of Lytoceratina from either Phylloceratina (Arkell et al 1957;Wiedmann 1969;House 1988) or Psiloceratoidea (Houša 1965;Page 1996Page , 2008Guex 1995;Blau et al 2008;Hoffmann 2010;Guex et al 2012); b. derivation of Eoderoceratoidea from either Psiloceratoidea (Schindewolf 1962;Page 1996) or Lytoceratoidea (Donovan et al 1981;Howarth 2013); note that the latter interpretation makes Ammonitina polyphyletic unless Psiloceratoidea is excluded from it and elevated to suborder status, as suggested by Page (1996Page ( , 2008; c. the origin of Ancycloceratina from Lytoceratina (Arkell et al 1957;Wiedmann 1966), Spiroceratoidea (Wright et al 1996), or Perisphinctina (Donovan et al 1981Bessenova and Mikhailova 1991;Page 1996;Mikhailova and Baraboshkin 2009); d. the origin of Turrilitoidea from Lytoceratina (Doguzhaeva and Mikhailova 1981, Bessenova andMikhailova 1991;Mikhailova and Baraboshkin 2009) or Ancyloceratoidea (House 1988;Wright et al 1996); e. derivation of Scaphitoidea from Ancyloceratoidea (Page 1996), Turrilitoidea (Wright 1981), or Perisphinctoidea (Engeser and Keupp 2002).…”

Section: Major Ammonoid Cladesmentioning

confidence: 91%

Macroevolution and Paleobiogeography of Jurassic-Cretaceous Ammonoids

Yacobucci

2015

Topics in Geobiology

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The evolution of the heteromorph and monomorph early cretaceous ammonites of the suborder Ancyloceratina Wiedmann

Cited by 17 publications

References 12 publications

Phylogenetic Analysis of Thecosomata Blainville, 1824 (Holoplanktonic Opisthobranchia) Using Morphological and Molecular Data

Phylogenetic Analysis of Thecosomata Blainville, 1824 (Holoplanktonic Opisthobranchia) Using Morphological and Molecular Data

Origin of the Tethyan Hemihoplitidae tested with cladistics (Ancyloceratina, Ammonoidea, Early Cretaceous): an immigration event?

Macroevolution and Paleobiogeography of Jurassic-Cretaceous Ammonoids

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