Queuing behaviour has been documented in marine arthropods from Cambrian to modern oceans. It was previously hypothesized that this provided energy savings through hydrodynamic drafting, with trilobites following positions produce less drag than those leading. In study, we evaluate the hydrodynamics of queuing Devonian trilobite Trimerocephalus chopini using computational fluid dynamics. The re...

The experimental evidence reveals that sessile drops on a dielectric horizontal substrate subjected to sub-critical in-plane electric field acquire steady-state configurations where balance between the pulling-outwards Maxwell stresses and restoring surface tension has been attained. On other hand, experiments show in supercritical become dominant not only stretch drop as whole but also trigger...

The Steptoean Positive Carbon Isotope Excursion (SPICE) event at ca. 497−494 Ma was a major carbon-cycle perturbation of the late Cambrian that coincided with rapid diversity changes among trilobites. Several scenarios (e.g., climatic/oceanic cooling and seawater anoxia) have been proposed to account for an extinction trilobites onset SPICE, but exact mechanism remains unclear. Here, we present...