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- W2897578512 abstract "This work shows systematics, paleobiological, paleoecological and taphonomic considerations of invertebrates fossils from Ipu Formation, Serra Grande Group, Parnaiba Basin. Sedimentological, stratigraphic and paleontological features were analyzed plus 138 fossils, coming from 20 outcrops of cities of Ipu, Pacuja, Reriutaba and Santana do Acarau, with extension around 100 km, located along Transbrasiliano-Kandi Lineament mainly. There are four facies at this Formation, distinguished by the wide range lithological: gravelstone, gravelly sandstone, sandstone with gravelly levels, coarse to middle sandstone. The fossils are related to Order Anthozoa (sea anemones), Filo Cnidaria, because they have: oral disc, aboral disc, column, tentacles, mouth, internal cavity and mesenteries possibly. Paleobiological studies set ability for burrowing in substrate, expansion and contraction of oral disc, representing a rare paleontological record assigned to frozen-behaviour. Paleoecological searches suggest the fluviomarine environment, shallow, high energy, allowed eutrophic conditions, favoring the aggregation of sea anemones, with plenty of 20 individuals/m2, associated with other invertebrates traces fossils. Data of eigth taphonomic classes support benthic life way, incorporation of sediment inside the body related to preservation, found in life position and quickly smothered. The fossil assemblage is named as Biota of Pacuja and it is useful for stratigraphic correlation because of wide regional distribution at different lithology of Ipu Formation, besides having new evidences about diversification and evolutionary inovations of cnidarians." @default.
- W2897578512 created "2018-10-26" @default.
- W2897578512 creator A5014433818 @default.
- W2897578512 date "2017-12-19" @default.
- W2897578512 modified "2023-09-27" @default.
- W2897578512 title "Invertebrados fósseis da formação IPU (siluriano), Grupo Serra Grande, Bacia do Parnaíba" @default.
- W2897578512 hasPublicationYear "2017" @default.
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