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The reengineering of reef habitats during the great Ordovician biodiversification event

date_range 2017
person
Author Kröger B.
description
Abstract Bryozoans, stromatoporoid sponges, and tabulate corals, all colonial metazoans with lamellar, encrusting growth forms, developed and simultaneously diversified during the Great Ordovician Biodiversification Event (GOBE). After revisiting some classic Lower, Middle, and Upper Ordovician reef localities in Laurentia (Franklin Mountains, west Texas, Mingan Islands in eastern Canada, and Champlain Valley in northeastern United States) and Baltica (northern Estonia) and reviewing the literature, we demonstrate that during the Ordovician a newly emerging consortium of sheet-like bryozoans, stromatoporoid sponges, and tabulate corals locally bound together by microbes, automicrite, and cement and solidly rooted in sediment became the dominant reef-builders globally. The diversification of these sheet-like metazoans (SLM), however, clearly lagged behind the first appearance of their respective skeletal ancestors. Their habitat expansion can be exemplified as a case of simultaneous ecological fitting and ecosystem engineering when the independently evolved shared traits were simultaneously co-opted and became advantageous under globally different environmental conditions. This interaction led to the evolutionary diversification of colonial metazoans during the GOBE and to the expansion of novel reef habitats in previously soft-surface settings; a transformation that forever changed marine reefal ecosystems. Copyright © 2017, SEPM (Society for Sedimentary Geology).
article
DOI 10.2110/palo.2017.017
language
Journal Palaios
description
Source Scopus

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Citations Articles

Source from Semantic Scholar
Rise and fall of archaeocyath reefs shaped early Cambrian skeletal animal abundance
Cambrian series 2 calcimicrobial crust–cement boundstone in the Yangtze Block, China: A distinctive bioconstruction as a legacy of precambrian reef evolution
Marine biological responses to abrupt climate change in deep time
Calcimicrobe-stromatoporoid bioherms from the upper Darriwilian of the Moyero River, Siberia: Implications for reef development during the Great Ordovician Biodiversification Event
Ecological novelty at the start of the Cambrian and Ordovician radiations of echinoderms
Life on the Edge: The Cambrian Marine Realm and Oxygenation
STROMATOPOROID-ECHINODERM ECOLOGICAL SUCCESSIONS IN THE LATE ORDOVICIAN (KATIAN): REEF FACIES AND THE ROLE OF KEY BIOTA IN REEF ARCHITECTURE
Skeletal abundance of Upper Ordovician coral reefs, Lourdes Formation, western Newfoundland
Cambrian through Ordovician reef transitions in North and South China: Changes in reef construction and background geobiological environments
Microbial Origin of the Ordovician Stromatoporoid-Like Organism Zondarella from the Argentine Precordillera and the Post- Cambrian Persistence of Stromatolite Microbialite Reefs
Katian (Late Ordovician) sphinctozoan-bearing reefs: Hybrid carbonates before the glacial maximum
Scale dependent diversity of bryozoan assemblages in the reefs of the Late Ordovician Vasalemma Formation, Estonia
Relatively Deep Subtidal Microbial–Lithistid Sponge Reef Communities in Lower Ordovician Rocks Reveal Incipient Escalation of the Great Ordovician Biodiversification Event
Carbonate shelf development and early Paleozoic benthic diversity in Baltica: a hierarchical diversity partitioning approach using brachiopod data
Modern brackish bryostromatolites (“bryoliths”) from Zeeland (Netherlands)
Keratose sponge–microbial consortia in stromatolite-like columns and thrombolite-like mounds of the Lower Ordovician (Tremadocian) Mungok Formation, Yeongwol, Korea
Late Tremadocian (Early Ordovician) reefs on the Yangtze Platform, South China, and their geobiological implications: a synthesis
Bryozoan‐rich stromatolites (bryostromatolites) from the Silurian of Gotland and their relation to climate‐related perturbations of the global carbon cycle
Mid–Late Ordovician tetradiid–calcimicrobial–cement reef: A new, peculiar reef-building consortium recording global cooling
Facilitating corals in an early Silurian deep‐water assemblage
EARLY–MIDDLE ORDOVICIAN SEASCAPE-SCALE AGGREGATION PATTERN OF SPONGE-RICH REEFS ACROSS THE LAURENTIA PALEOCONTINENT
The ‘classic stromatolite’ Cryptozoön is a keratose sponge‐microbial consortium
Hybrid Carbonates: in situ abiotic, microbial and skeletal co-precipitates
METAZOAN REEF CONSTRUCTION IN A MIDDLE ORDOVICIAN SEASCAPE: A CASE STUDY FROM THE MINGAN ARCHIPELAGO, QUEBEC
References
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Did hard substrate taxa diversify prior to the Great Ordovician Biodiversification Event?
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References Articles

Source from Semantic Scholar