Discovery of missing link between demosponges and …
WEBJul 13, 2017 · Here we describe a new species of fossil sponge, Conciliospongia anjiensis gen. et sp. nov., from the Late Ordovician (~444 Ma) Anji Biota of South China.
Stromatoporoids and extinctions: A review - ScienceDirect
WEBMay 1, 2024 · Stromatoporoids are common shallow marine hypercalcified sponges in two major episodes with distinctive skeletal architectures: 1) Palaeozoic: Ordovician to Late Devonian; and 2) Mesozoic: Late Triassic to Cretaceous and rare Cenozoic, but not confirmed in Permian and earlier Triassic strata.
Unusual Deep Water sponge assemblage in South …
WEBNov 5, 2015 · Here we report a unique sponge assemblage spanning the interval of the end-Ordovician mass extinction from the Kaochiapien Formation (Upper Ordovician-Lower Silurian) in South China.
Biogeography of Ordovician sponges | Journal of Paleontology ...
WEBSponges have an unrealized potential importance in biogeographic analysis. Biogeographic patterns determined from our analysis of all published data on distribution of Ordovician genera indicate Early Ordovician sponge faunas have relatively low diversity and are completely dominated by demosponges. Early Ordovician (Ibexian) faunas are ...
WEBOrdovician sponge faunas are separated into Early Ordovician and Late Ordovician faunas based on stratigraphic occurrences. Early Ordovician faunas, as used here, include Ibexian and Mid-dle Ordovician Whiterockian sponges, and Late Ordovician fau-nas include Mohawkian-Cincinnatian sponges. We have also
Flourishing Sponge-Based Ecosystems after the End-Ordovician …
WEBMore than 75 sponge species represent multiple lineages that survived the Late Ordovician mass extinction. Sponges also flourished after other mass extinctions and may have facilitated ecosystem recovery by stabilizing sediment.
Ordovician sponges from the Lenoir Limestone, Tennessee: new …
WEBThese findings confirm the major paleobiogeographic picture for Laurentian sponges (i.e., the differential distribution of sponge faunas along both North American margins), because none of these eastern margin species has been reported from western margin faunas.
Ordovician sponges from the Lenoir Limestone, Tennessee: new
WEBJan 30, 2020 · Fossil sponges are a well-known faunal component of the Upper Ordovician (Sandbian) Lenoir Limestone (lower Chickamauga Group) of the Valley and Ridge Provenance of east Tennessee, USA.
Untangling intricate microbial–sponge frameworks: The …
WEBApr 1, 2015 · In this study, we document sponge frameworks in typical Early Ordovician microbial–sponge reefs from Korea, and assess the sedimentological and paleoecological functions of the sponges based on detailed petrographic descriptions.
Ordovician sponges from the Lenoir Limestone
WEBJan 1, 2020 · Five genera of anthaspidellid and streptosollenid demosponges are described from the Ordovician Lenoir Limestone near Lenoir City, Loudon.