Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites ...

• Main Authors: Park, Tae-Yoon S., Kihm, Ji-Hoon, Woo, Jusun, Kim, Young-Hwan G., Lee, Jong-Ik
• Format: Dataset
• Language: English
• Published: Dryad 2017
• Subjects: protaspis; Metamorphosis; Proceratopyge cf. P. lata; Furongian; Victoria Land; Antarc*
• Online Access: https://dx.doi.org/10.5061/dryad.mm4cc; https://datadryad.org/stash/dataset/doi:10.5061/dryad.mm4cc

There were multiple origins of metamorphosis-undergoing protaspides in trilobite evolution: within the superfamilies Remopleuridioidea, Trinucleoidea, and within the Order Asaphida. Recent studies have revealed that the protaspides of the Cambrian representatives of the Remopleuridioidea and the Trinucleoidea did not undergo metamorphosis. However, ontogeny of the Cambrian members of the Order Asaphida has remained unknown. This study documents the ontogeny of the Furongian asaphoidean ceratopygid trilobite, Proceratopyge cf. P. lata Whitehouse, from northern Victoria Land, Antarctica. Two stages for the protaspid phase, five developmental stages for the post-protaspid cranidia, and ten stages for the post-protaspid pygidia have been identified. Interestingly, the protaspis directly developed into a meraspis without metamorphosis. A new cladistic analysis resulted in a single most parsimonious tree, according to which the presence of the bulbous commutavi protaspis turns out to be a synapomorphy for ... : 1. cranidia dataExcel file for cranidia measurements2. pygidia dataExcel fiel for pygidia measurements3. Average and SD of pygidia for grapherExcel fiel of averages and standard deviations of pygidia measurementsData matrix for TNTData matrix for TNT analysis(.tnt) ...