New species of Peregrinella(Brachiopoda) from the Lower Cretaceous of the Gargano Promontory (southern Italy)

Posenato, Renato; Morsilli, Michele

doi:10.1006/cres.1999.0171

Cited by 13 publications

(6 citation statements)

References 8 publications

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“…). Peregrinella has a cosmopolitan distribution, but it was interpreted as being confined to ancient methane seep sites based on the geochemistry of the shell and the limestone host rock (Campbell & Bottjer ; Posenato & Morsilli ; Kiel et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, the large size of the Permian lyttonioid and richthofenioid brachiopods is thought to have been related to their tropical distributions and possible association with zooxanthellae algae (Cowen ); an attractive hypothesis established on the basis of their large size and comparison with the giant bivalve Tridacna and its symbionts. It has been hypothesized that other brachiopods from deep time reached very large sizes through methano or thiotrophic diets, such as the Lower Cretaceous rhynchonellid Peregrinella (Campbell & Bottjer ; Posenato & Morsilli ; Kiel et al . ).…”

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confidence: 99%

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The giants of the phylum Brachiopoda: a matter of diet?

et al. 2019

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The species of the brachiopod Gigantoproductus are giants within the Palaeozoic sedentary benthos. This presents a dilemma as living brachiopods have low‐energy lifestyles. Although brachiopod metabolic rates were probably higher during the Palaeozoic than today, the massive size reached by species of Gigantoproductus is nevertheless unusual. By examining the diet of Gigantoproductus species from the Visean (Mississippian, Carboniferous) of Derbyshire (UK), we seek to understand the mechanisms that enabled those low‐metabolism brachiopod species to become giants. Were they suspension feeders, similar to all other brachiopods, or did endosymbiosis provide a lifestyle that allowed them to have higher metabolic rates and become giants? We suggest that the answer to this conundrum may be solved by the identification of the biogeochemical signatures of symbionts, through combined analyses of the carbon and nitrogen‐isotopic compositions of the occluded organic matrix within their calcite shells. The shells are formed of substructured columnar units that are remarkably long and a few hundreds of microns wide, deemed to be mostly pristine based on multiple analyses (petrography, cathodoluminescence (CL), scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM)); they contain occluded organic fractions detected by TEM, nuclear magnetic resonance (NMR) and gas chromatography mass spectrometry (GC‐MS) analyses. We conclude that the gigantic size reached by the species of Gigantoproductus is probably the result of a mixotroph lifestyle, by which they could rely on the energy and nutrients derived both from photosymbiotic microbes and from filtered particulate food.

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Section: Discussionmentioning

confidence: 99%

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The giants of the phylum Brachiopoda: a matter of diet?

et al. 2019

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“…The Early Cretaceous is a period of ubiquitous occur− rences of the rhynchonellide Peregrinella in ancient hydro− carbon seep deposits. This brachiopod, as with Dzieduszyc− kia, is characterised by cosmopolitan but disjunct occur− rences (Campbell and Bottjer 1995a, b;Sandy 1995;Sandy and Blodgett 1996;Posenato and Morsilli 1999;Kiel and Peckmann 2008). It is known from Alaska , US Pacific Coast (Campbell and Bottjer 1995a, b), Mexico (Ortiz−Hernández and Martínez−Reyes 1993; Sandy 1995), Crimea (Kiel and Peckmann 2008), Tibet (Sun 1986), and numerous localities in Europe (Ascher 1906;Biernat 1957;Thieuloy 1972;Posenato and Morsilli 1999;Lazăr et al 2005).…”

Section: Methodsmentioning

confidence: 99%

“…This brachiopod, as with Dzieduszyc− kia, is characterised by cosmopolitan but disjunct occur− rences (Campbell and Bottjer 1995a, b;Sandy 1995;Sandy and Blodgett 1996;Posenato and Morsilli 1999;Kiel and Peckmann 2008). It is known from Alaska , US Pacific Coast (Campbell and Bottjer 1995a, b), Mexico (Ortiz−Hernández and Martínez−Reyes 1993; Sandy 1995), Crimea (Kiel and Peckmann 2008), Tibet (Sun 1986), and numerous localities in Europe (Ascher 1906;Biernat 1957;Thieuloy 1972;Posenato and Morsilli 1999;Lazăr et al 2005). Campbell and Bottjer (1995b) have suggested that Peregrinella is an end−member of vent−seep endemic lin− eages of rhynchonellides (Dzieduszyckia-IbergirhynchiaPeregrinella), a hypothesis challenged by Baliński and Bier− nat (2003) who noted that morphological characters of the crura suggest different familial placement.…”

Section: Methodsmentioning

confidence: 99%

An outer-shelf cold-seep assemblage in forearc basin fill, Pliocene Takanabe Formation, Kyushu Island, Japan

Majima¹,

Ikeda

Wada³

et al. 2003

Paleontological Research

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“…It is characterized by a well-bedded succession of lime mudstone with small slumps, chert nodules, and chert layers. At the top, there is a bed 30 cm thick which consists of disarticulated shells of brachiopods (Peregrinella garganica; Posenato and Morsilli 1999). The depositional environment is interpreted as a basinal setting with local, thin calciturbidites.…”

Section: Stratigraphic Sectionsmentioning

confidence: 99%

Toe-of-slope of a Cretaceous carbonate platform in outcrop, seismic model and offshore seismic data (Apulia, Italy)

Gartner

Morsilli

Schlager

et al. 2002

International Journal of Earth Sciences

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Synthetic seismic models of outcrops in the Early Cretaceous slope of a carbonate platform on the Gargano Promontory (southern Italy) were compared to an offshore seismic section south of the Promontory. Outcrops of the same age on the promontory have the same sequence stratigraphic characteristics as their offshore equivalent, and are the only areas where the transition from platform to basin of Early Cretaceous is exposed on land. Two adjacent outcrop areas were combined into one seismic-scale lithologic model with the aid of photo mosaics, measured sections, and biostratigraphic data. Velocity, density, and porosity measurements on spot samples were used to construct the impedance model. Seismic models were generated by vertical incidence and finite difference programs. The results indicate that the reflections in the seismic model are controlled by the impedance contrast between low porous intervals rich in debris from the platform and highly porous intervals of pelagic lime mudstone, nearly devoid of debris. Finite difference seismic display showed best resemblance with the real seismic data, especially by mapping a drowning unconformity

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New species of Peregrinella(Brachiopoda) from the Lower Cretaceous of the Gargano Promontory (southern Italy)

Cited by 13 publications

References 8 publications

The giants of the phylum Brachiopoda: a matter of diet?

The giants of the phylum Brachiopoda: a matter of diet?

An outer-shelf cold-seep assemblage in forearc basin fill, Pliocene Takanabe Formation, Kyushu Island, Japan

Toe-of-slope of a Cretaceous carbonate platform in outcrop, seismic model and offshore seismic data (Apulia, Italy)

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