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100 _aTâmega, Frederico Tapajós de Souza
_951768
245 _aPalaeoenvironmental dynamics of Holocene shoreface bryoliths from the southern coast of Brazil
300 _aVol 29, issue 4, 2019 : (662-675 p.).
520 _aBeds of free-living coated nodules (coralline algae, bryozoans, acervulinid foraminifera) create shallow-water carbonate biogenic benthic habitats, which are sensitive to human disturbance and slow to recover. Holocene bryoliths, ranging from sub-spheroidal, sub-discoidal to sub-ellipsoidal in shape, were found scattered in the foredunes in ca. 30-km stretch along the Hermenegildo and Concheiros do Albardão beaches on the southernmost coast of Brazil (Santa Vitória do Palmar municipality, Rio Grande do Sul State). The dominating bryozoan species forming the bryolith is Biflustra holocenica Vieira, Spotorno-Oliveira and Tâmega sp. nov. The inner bryolith arrangement, generally asymmetrical, shows multilamellar and circumrotatory growth of colonies that envelop the bivalve Ostrea puelchana. Bryozoans and subordinate corals characterize the outer bryolith surfaces. The ichnogenera Gastrochaenolites (made by the boring bivalve Lithophaga patagonica) and Caulostrepsis occur throughout the bryoliths, from the inner part up to the outer surface. The studied bryoliths, originated in a shoreface setting at ca. 7910–7620 cal. yr BP and during subsequent storm waves, were resedimented onto the foreshore and foredunes (to ca. 5700 cal. yr BP) where the bryoliths were finally fossilized.
650 _aBrazil,
_951769
650 _aBryozoa,
_951770
650 _a Holocene,
_950806
650 _apalaeoecology,
_951356
650 _ataxonomy
_951771
700 _aSpotorno-Oliveira, Paula
_951772
700 _aDentzien-Dias, Paula
_951773
700 _aBuchmann, Francisco Sekiguchi
_951774
700 _aVieira, Leandro Manzoni
_951775
700 _aMacario, Kita
_951776
700 _aNash, Merinda
_951777
700 _aGuimarães, Renato Bastos
_951778
700 _aFrancischini,, Heitor
_951779
700 _aBassi, Davide
_951780
773 0 _012756
_916504
_dLondon: Sage Publication Ltd, 2019.
_tHolocene/
_x09596836
856 _uhttps://doi.org/10.1177/0959683618824739
942 _2ddc
_cART
999 _c12817
_d12817