2010/09/01 by Antonio Liccardo, Luiz Carlos Weinschütz · 1 citation
Environmental Science · Earth and Planetary Sciences · #Fish biology, ecology, and behavior #Paleontology and Evolutionary Biology #Ichthyology and Marine Biology #Outcrop #Geology #Structural basin #Sedimentary rock #Paleontology #Curitiba #Stratification (seeds) #Humanities #Art #Biology
paper · doi:10.25249/0375-7536.2010403330338
openalex publication_date 2010/09/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Sedimentary Basin, which several authors have studied for more than a century, was described, essentially, as afossiliferous. The only registers until today are micropaleontological studies which met thecamoebians, organophyts and micrometric vegetal remains in claystones of the upper strata of Guabirotuba Formation, and some organic material with vegetal fibers and palinomorphs, also among the claystones. Beyond these pellitic rocks, this formation presents localized lens and layers of arcoses and arcosian sands, often with parallel or crossed stratification. Recently, among these deposits has been registered the occurrence of teeth and bone fragments in the basal portion of Guabirotuba Formation. They are unidentified bones and teeth of ziphodont crocodylomorpha, probably sub-order Mesosuchia. It’s the first occurrence of vertebrates’ signs found in this basin and its information could be useful to interpret the paleoclimate exchanges of this framework. Urban occupation and the fragility of these rocks result in the existence of few outcrops on the present time, that makes the discovery of these fossils important also for the legal preservation of the site.