Bouleiceras (Hildoceratidae, Ammonitina) from the lower Toarcian (Jurassic) of the Iberian Range (Spain): Taxonomy, stratigraphic distribution and insights on its dispersal

Martínez, Gemma; Joral, Fernando García

doi:10.1016/j.geobios.2020.07.001

Cited by 8 publications

(2 citation statements)

References 33 publications

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“…Both Leukadiella and Renziceras have been often related to Frechiella Prinz, 1904 [58], Paroniceras Bonarelli, 1893 [59], Oxyparoniceras Guex, 1974 [24], Bouleiceras and Nejdia Arkell, 1952 [60]. These genera are also relatively rare in the Mediterranean or worldwide [61][62][63][64]; as a whole, they have been alternatively conceived as forming a unique subfamily Bouleiceratinae [24] or Hildoceratinae [25]; two separate subfamilies Paroniceratinae and Leukadiellinae [25,65]; or even three distinct subfamilies Bouleiceratinae, Paroniceratinae and Leukadiellinae [66].…”

Section: Historical Backgroundmentioning

confidence: 99%

On the Rarity and Peculiarity of the Early Toarcian (Lower Jurassic) Leukadiellinae Ammonites—Systematic Review and Insights on the Interplay of Environmental Stress, Evolution and Biodiversity

Ridente

2022

Geosciences

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The subfamily Leukadiellinae Macchioni and Venturi, 2000 includes the two rare genera Leukadiella Renz, 1913 and Renziceras Arkell, 1953. Genus Leukadiella is characterised by ornamental and structural features unusual to the family Hildoceratidae Hyatt, 1867; for this reason, it has been occasionally grouped with other “odd” representatives of this family, as, for instance, Frechiella Prinz, 1904 and Paroniceras Bonarelli, 1893. While Renziceras comprises only one species, the eleven species currently recognised within Leukadiella show a noticeably discontinuous variability field; together with rarity of findings, the interpretation of this variability represents a renowned obstacle to their classification and phylogenetic reconstruction. Following an analysis of the morphological characters commonly used for defining Leukadiella species, a revised taxonomic scheme is herein proposed. Two clusters of characters are defined, based on which two morphologically distinct groups of species are distinguished, referred to as Helenae Group and Ionica Group. The genus name Leukadiella is maintained for species of the Helenae Group, which are restricted via synonymy to Leukadiella helenae Renz, 1913 and Leukadiella jeanneti Renz, 1927. The new genus name Neoleukadiella gen. nov. is proposed for species of the Ionica Group, which, by analogous limitation, are Neoleukadiella ionica Renz and Renz, 1946 and Neoleukadiella gallitellii Pinna, 1965. The reduction in the number of species from eleven to four is consistent with their rarity and limited paleogeographic distribution. The closely related Renziceras is considered the direct progenitor of Leukadiella; in turn, the Apennine genus Cingolites Sassaroli and Venturi, 2010 is proposed as transitional between Hildaites Buckman, 1921 and Renziceras. Conversely, the progenitor of Neoleukadiella remains uncertain, although a possible relationship between Leukadiella and Neoleukadiella species is tentatively traced. Finally, some challenging assumptions are made by emphasizing the role of environmental stress in controlling developmental dynamics that may drive striking phenotypic modification, of the kind observed in the Leukadiellinae species.

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Section: Historical Backgroundmentioning

confidence: 99%

On the Rarity and Peculiarity of the Early Toarcian (Lower Jurassic) Leukadiellinae Ammonites—Systematic Review and Insights on the Interplay of Environmental Stress, Evolution and Biodiversity

Ridente

2022

Geosciences

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“…;Mouterde & Rocha, 1981;Mouterde & Elmi, 1991;Rulleau et al, 2003;Martínez & García Joral, 2020). Some of them become extinct and others persist during the Elegantulum Subzone or they originate following the Jenkyns Event.…”

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confidence: 99%

Ammonites from the lower and middle Toarcian (Jurassic) in the Cantabrian Range (Asturias and Basco-Cantabrian Basin, Northern Spain). Chronostratigraphy, biotic events and correlations with other Iberian basins

Goy,

Comas-Rengifo,

García-Ramos

et al. 2024

Preprint

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The present paper studies the ammonite associations from the terminal Pliensbachian (Spinatum Zone, Hawskerense Subzone) and from the lower-middle Toarcian (Tenuicostatum to Variabilis Zones) in two areas of the Cantabrian Range, situated in the Asturian Basin (AB) and in the Basco-Cantabrian Basin (BCB). The outcrops examined in the AB were situated on the coast, between Villaviciosa and Ribadesella and those of the BCB were located inland, in the provinces of Cantabria and Palencia. The lower boundary of the Toarcian was accurately established with the first record of the genus Dactylioceras in both basins. In the Cantabrian Range, we characterised all the standard zones and subzones of the Toarcian Stage. In order to establish the chronostratigraphic horizons, we considered the evolution of the Dactylioceratidae (Dactylioceratinae) in the Tenuicostatum Zone, of the Hildoceratidae (Harpoceratinae) in the Serpentinum Zone, of the Hildoceratidae (Hildoceratinae) from the last horizon of the Falciferum Subzone to the end of the Bifrons Zone, and of the Phymatoceratidae (Phymatoceratinae) in the Variabilis Zone. We identified the following main regional or global biotic events: 1) the mass extinction of the Amaltheidae Family in the upper part of the Hawskerense Subzone; 2) the expansion of the Dactylioceratinae Subfamily as from the base of the Tenuicostatum Zone; 3) the extinction of practically all the late Arieticeratinae (Emaciaticeras, Canavaria, Tauromeniceras), of the Lioceratoides and of the Dactylioceras (Eodactylites) in the boundary between the Paltum/Mirabile and Semicelatum subzones; 4) the final extinction of the aforementioned groups, and of the Neolioceratoides, Protogrammoceras (Paltarpites) and almost all the Dactylioceras (Orthodactylites) in the boundary between the Tenuicostatum and Serpentinum zones, coinciding with the final stage of the Jenkyns Event. When the factors that caused this event came to an end, at regional or global scale there occurred a recovery of the Dactylioceratinae, Harpoceratinae and Hildoceratinae within a short time interval, with significant radiations of these subfamilies. The Phymatoceratinae subsequently radiated from the Bifrons Zone.

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Early Toarcian (Jurassic) brachiopods from the Balearic Islands (Spain) and their paleobiogeographic context

et al. 2022

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The record of brachiopods in the Lower Toarcian of the Balearic Islands is described after a reassessment of previous works and new samplings in the Tramuntana Range of Mallorca. The recognized species have been assimilated to the assemblages described in the Iberian Range in the Tenuicostatum and Serpentinum biozones. Moreover, a detailed comparison with other Western Tethys basins and the study of the dispersion of the brachiopod faunas in relation with the Early Toarcian Oceanic Anoxic Event, allow to refine the paleobiogeographic relationship of the Balearic brachiopods. They belong to the Euro-Boreal Province of brachiopods in the Tenuicostatum Biochron and correspond to the”Spanish Fauna” that emerged after the deep paleobiogeographic disruption that took place at the base of Serpentinum Biochron. The occurrence of Prionorhynchia msougari Rousselle in the Serpentinum Zone of Mallorca indicates that, within this last assemblage, there would be a closer connection between the Balearic region and the southern margin of the Tethys (Betic and North African basins) than with the northern margin (Eastern Iberian Platform System and Eastern Pyrenees). This paleobiogeographic conclusion is consistent with the supposed position of the Balearic area in the Early Toarcian, on the southeastern margin of Iberia and near the Alboran and Kabylian margins.

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Bouleiceras (Hildoceratidae, Ammonitina) from the lower Toarcian (Jurassic) of the Iberian Range (Spain): Taxonomy, stratigraphic distribution and insights on its dispersal

Cited by 8 publications

References 33 publications

On the Rarity and Peculiarity of the Early Toarcian (Lower Jurassic) Leukadiellinae Ammonites—Systematic Review and Insights on the Interplay of Environmental Stress, Evolution and Biodiversity

On the Rarity and Peculiarity of the Early Toarcian (Lower Jurassic) Leukadiellinae Ammonites—Systematic Review and Insights on the Interplay of Environmental Stress, Evolution and Biodiversity

Ammonites from the lower and middle Toarcian (Jurassic) in the Cantabrian Range (Asturias and Basco-Cantabrian Basin, Northern Spain). Chronostratigraphy, biotic events and correlations with other Iberian basins

Early Toarcian (Jurassic) brachiopods from the Balearic Islands (Spain) and their paleobiogeographic context

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