TY - T1 - Early-Middle Ordovician Seascapescale aggregation pattern of sponge-rich reefs across the Laurentia paleocontinent SN - / UR - http://hdl.handle.net/10138/326095 T3 - A1 - Kröger, Björn; Penny, Amelia A2 - PB - Y1 - 2020 LA - eng AB - During the late Cambrian–Early Ordovician interval the predominant non-microbial reef builders were sponges or sponge-like metazoans. The lithological and faunal composition of Cambro-Ordovician sponge-dominated reefs have previously been analyzed and reviewed. Here we take the relationship between reef aggregation pattern at reef to seascape scale into account, and look for changes during the Early–Middle Ordovician interval, in which metazoans became dominant reef builders. In a comparison of ... VO - IS - SP - OP - KW - 1171 Geosciences; ST-GEORGE GROUP; TABLE HEAD GROUPS; WESTERN NEWFOUNDLAND; CARBONATE SEDIMENTATION; BIOTURBATION; BIOSTRATIGRAPHY; CONSTRUCTION; PALEOECOLOGY; STRATIGRAPHY; COMMUNITIES N1 - PP - ER -