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oai:docta.ucm.es:20.500.14352/983962025-08-28T13:42:16Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Ortega Hernández, Javier author Esteve Serrano, Jorge Vicente author Butterfield, Nicholas J. 2024-02-02T15:29:12Z 2024-02-02T15:29:12Z 2013 Ortega-Hernández, Javier, et al. «Humble Origins for a Successful Strategy: Complete Enrolment in Early Cambrian Olenellid Trilobites». Biology Letters, vol. 9, n.o 5, octubre de 2013, p. 20130679. https://doi.org/10.1098/rsbl.2013.0679. 10.1098/rsbl.2013.0679 https://hdl.handle.net/20.500.14352/98396 1744-957X https://doi.org/10.1098/rsbl.2013.0679 https://royalsocietypublishing.org/doi/10.1098/rsbl.2013.0679 Trilobites are typified by the behavioural and morphological ability to enrol their bodies, most probably as a defence mechanism against adverse environmental conditions or predators. Although most trilobites could enrol at least partially, there is uncertainty about whether olenellids—among the most phylogenetically and stratigraphically basal representatives—could perform this behaviour because of their poorly caudalized trunk and scarcity of coaptative devices. Here, we report complete—but not encapsulating—enrolment for the olenellid genus Mummaspis from the early Cambrian Mural Formation in Alberta, the earliest direct evidence of this strategy in the fossil record of polymerid trilobites. Complete enrolment in olenellids was achieved through a combination of ancestral morphological features, and thus provides new information on the character polarity associated with this key trilobite adaptation. eng Humble origins for a successful strategy: complete enrolment in early Cambrian olenellid trilobites journal article 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URL https://docta.ucm.es/bitstreams/4c8d9e57-ab33-4686-a766-464ac9587019/download File MD5 4530a2f02475e08714b96aaee8c70a18 901956 application/pdf Humble_origins.pdf URL https://docta.ucm.es/bitstreams/dff0316d-1f1c-4115-be00-bc6e735a1540/download File MD5 ade5cd07753440f3184d25b5f50bbf64 21858 text/plain Ortega-Hernández et al. 2013.pdf.txt