Palaeoenvironmental interpretation of an Upper Triassic deposit in southwestern Gondwana (Argentina) based on an insect fauna, plant assemblage, and their interactions

Lara, María Belén; Cariglino, Bárbara; Zavattieri, Ana Marı́a

doi:10.1016/j.palaeo.2017.03.029

Cited by 22 publications

(26 citation statements)

References 38 publications

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“…Based on paleomagnetic pole reconstructions, the Quebrada del Durazno locality was located in the middle latitudes (∼45 ∘ S), in the extratropical belt of Gondwana. The sedimentary analysis supports a deltaic environment with semi-permanent ponds developing under locally temperate to warm, humid conditions, but affected by the megamonsoonal climate of the Late Triassic (Lara et al, 2017). As a consequence, dry seasons would have alternated with more humid ones.…”

Section: Ecological Importance Of the Oothecamentioning

confidence: 63%

“…Our fossil oothecae, recovered from the upper levels of the Potrerillos Formation, were found in association with a diverse and typical Gondwanan Dicroidium flora and profuse invertebrate fauna (Lara et al, 2017) (Fig. 4).…”

Section: Ecological Importance Of the Oothecamentioning

confidence: 85%

“…To date, more than 300 fossils of insects belonging to numerous groups, including Hemiptera, Orthoptera, Odonata, Coleoptera, Miomoptera, Grylloblattida, Mecoptera and Diptera, have been recovered from the Triassic Quebrada del Durazno locality (Lara et al, 2017). Unfortunately, despite their abundant and diverse occurrence, no direct body evidence (e.g.…”

Section: Plausible Ootheca Producersmentioning

confidence: 99%

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Earliest record of fossil insect oothecae confirms the presence of crown‐dictyopteran taxa in the Late Triassic

Cariglino

Lara

Zavattieri

2020

Systematic Entomology

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Although dissimilar in their overall appearance and life habits, the praying mantises (Mantodea) and cockroaches (Blattodea, including their eusocial relatives, the termites [Isoptera]) are grouped within the clade Dictyoptera, based on – among other significant characteristics – the laying of eggs in a compound structure called an ootheca. The origin of the Dictyoptera and the currently recognized taxa within is, however, a controversial topic among entomologists. This has resulted from disparities in the divergence age estimates obtained from phylogenetic analyses based on molecular data together with the limited and controversial fossil evidence attributable to these groups. Here, we report two new oothecae ichnospecies found in a Carnian (237 to 227 mya. lowermost Upper Triassic) deposit from Argentina. Morphological comparisons and Scanning Electron Microscope and X‐ray Energy Dispersive Spectroscopy analyses of fossil and extant oothecae of mantises and cockroaches were performed in an attempt to solve their systematic placement within Dictyoptera and fossil allies, such as †Alienoptera. In addition to being the earliest known record of oothecae, this discovery moves the origin of this specialized reproductive strategy back by 100 million years. As direct fossil evidence, these specimens provide an important calibration and reference point that can inform future research on the origins and timing of diversification of the Dictyoptera.

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Section: Ecological Importance Of the Oothecamentioning

confidence: 63%

Section: Ecological Importance Of the Oothecamentioning

confidence: 85%

Section: Plausible Ootheca Producersmentioning

confidence: 99%

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Earliest record of fossil insect oothecae confirms the presence of crown‐dictyopteran taxa in the Late Triassic

Cariglino

Lara

Zavattieri

2020

Systematic Entomology

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“…Differences in the taxonomic diversity are markedly evident when comparing the fluvial systems represented by Potrerillos and Paramillos formations (Table 3, Figure 6). The Potrerillos Formation represents a braided fluvial system, which passes upward to moderatelyhigh sinuosity fluvial system with wide development of floodplain and deltaic plain (Kokogian et al 1993;Zamuner et al, 2001;Spalletti et al, 2005;Lara et al, 2017), and preserves 67 species (Table 3, Fig. 6, Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The Potrerillos and Paramillos fluvial systems show a well-developed flood plain in relatively few channel belts ref lecting that the generation of accommodation space was at least equal to the rate of sediment supply. The Potrerillos megaflora was mainly composed of leaves preserved as carbonaceous compressions and/or impressions (Morel et al, 2010(Morel et al, , 2011, related to the floodplain and crevasse splay (Zamuner et al, 2001;Spalletti et al, 2005;Lara et al, 2017). A relatively high groundwater position enhance the preservation potential of plant remains (Retallack, 1984).…”

Section: Muscites Guescelinimentioning

confidence: 99%

Syn-Eruptive Taphoflora From The Agua De La Zorra Formation (Upper Triassic) Cuyana Basin, Mendoza, Argentina

Pedernera

Ottone

Mancuso

et al. 2019

andgeo

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In the North of Mendoza Province, at Paramillos de Uspallata locality, Triassic sedimentary rocks outcrop. These Triassic beds are grouped in four formations: Paramillos, Agua de la Zorra, Portezuelo Bayo and Los Colorados. The Agua de la Zorra Formation is characterized by deposition in a deltaic and lacustrine system. The aims of this contribution are: (1) to realize a systematic study of new plant remains found in the Agua de la Zorra Formation and (2) to analize the influence of the potential of preservation and the volcanism in the Agua de la Zorra taphoflora in contrast with other Triassic units. Plant remains were systematically collected and compared with taphofloras from other Triassic formations of the Cuyana Basin. The systematic study from the Agua de la Zorra Formation allowed the determination of 21 taxa, nine of which have been cited in a previous contribution and 12 were described for the first time for the Agua de la Zorra Formation. There are differences in the taxonomic diversity between the taphofloras recovered from Potrerillos and Paramillos formations and these differences are linking with differences in biostratinomic process in each fluvial system and linked with the evidence of volcanic processes in these areas. The differences in diversity in the taphofloras of the Cacheuta and Agua de la Zorra formations can be more associated to ecological differences than variations in the taphonomic processes in each of the lake systems.

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Insect-Plant Interactions from the Mesozoic of Brazil: Triassic and Cretaceous

Mendes,

Bezerra,

Adami-Rodrigues

et al. 2023

Brazilian Paleofloras

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Palaeoenvironmental interpretation of an Upper Triassic deposit in southwestern Gondwana (Argentina) based on an insect fauna, plant assemblage, and their interactions

Cited by 22 publications

References 38 publications

Earliest record of fossil insect oothecae confirms the presence of crown‐dictyopteran taxa in the Late Triassic

Earliest record of fossil insect oothecae confirms the presence of crown‐dictyopteran taxa in the Late Triassic

Syn-Eruptive Taphoflora From The Agua De La Zorra Formation (Upper Triassic) Cuyana Basin, Mendoza, Argentina

Insect-Plant Interactions from the Mesozoic of Brazil: Triassic and Cretaceous

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