Abstract Abundant articulated specimens of the oryctocarine trilobite Oryctocarella duyunensis from lower Cambrian (Stage 4, Series 2) Balang Formation at Bulin section in western Hunan Province, South China, permit description all meraspid degrees. The maximum number thoracic segments observed this collection is 11. Meraspid growth was accompanied by progressive and gradual change overall form...

Here we report exceptionally preserved non-biomineralized compound eyes of a non-trilobite arthropod Cindarella eucalla from the lower Cambrian Chengjiang Lagerstätte, China. The specimen represents the oldest microanatomical evidence confirming the occurrence of highly developed vision in the early Cambrian, over 2,000 ommatidia in each eye. Moreover, a quantitative analysis of the distributio...

A 365 million year-old trilobite moult-carcass assemblage was described by Błażejowski et al. (2015) as the oldest direct evidence of moulting in the arthropod fossil record. Unfortunately, their suppositions are insufficiently supported by the data provided. Instead, the morphology, configuration and preservational context of the highly fossiliferous locality (Kowala Quarry, Poland) suggest th...