Tropidoleptus Carinatus, Orthids are a difficult group to characterize because they were so variable in shell shape and form. Species Synonym Tropidoleptus carinatus (Conrad, 1839) source: The Paleobiology Database Homotypic synonym of Strophomena carinatus (Conrad, 1839) 1,271 occurrences Overview Metrics Reference taxon. Although there have been reports of the presence of this genus in the Paraná Basin (Brazil) since the nineteenth century, its actual occurrence hasbeenthesubjectofmuchdebate Aug 29, 2014 · Tropidoleptus carinatus (Conrad, 1839) is a member of the Orthida, an order of brachiopods that lived from the Early Cambrian up to the Permian extinction. spinosa; and 2) S. Tropidoleptus carinatus from the Devonian of Bethany, New York (stratigraphic position uncertain) (MPM P11080). spinosa – P. Thus, there are two speciation events represented in this lineage: 1) T. Tropidoleptus carinatus is the founder of the lineage. —Tropidoleptus was a genus of brachiopods that had a very peculiar morphology and occurred in the Devonian period (about 419–358 million years ago) throughout the world. 96, 97). devonica. T. 171, figs 10-24) and Wilson (2014, pp. Illustrations of Tropidoleptus carinatus from Hall, reproduced in Linsley (1994, p. Figure 3. 9 shows the geologic context in which these species are Non-technical Summary. carinatus, for example, is one of the few orthids to have a concavo-convex shell, meaning that one side is concave (on the right in the The samples studied here exhibit the typical characteristics of Tropidoleptus, confirming that this genus also occurred in the Paraná Basin. carinatus – S. It gave rise to Spinatrypa spinosa, and this species in turn produced Pseudatrypa devonica. Since Tropidoleptus carinatus is confined in the late Devonian to the sediments of this belt of comparatively shallow sea, and conse- quently warmer water, we must conclude that its restriction and late survival here was due primarily to the higher average temperature of this part of the Devonian sea. It is possible that Tropidoleptus entered the Paraná Basin during the Eifelian/Givetian from the Amazonas and/or Parnaíba basins (Brazil), during a period of warm-water transgression. rfaq 1pz h4mx wb7d jee 5fad ocnsvhv yr l9 eg \