Abstract
Enrolled Conocoryphe heberti is described with detail and compared with the conocoryphid Occatharia sdzuyi , both very abundant in the middle Cambrian from the Mediterranean subprovince. Both show different morphological novelties very useful to enrol and interlock the trilobite body. The morphological study allows us to recognize coaptative devices that show the possibility of a tight encapsulation enrolment. The coaptative devices are analyzed in cephalons, pigidia and almost completed outstretched trilobites of Bailiella levyi, Bailiaspis souchoni and Parabailiella languedocensis belonging to the same family. The coaptative structures analyzed show enough variability in cephalons and pigidia that allow suggesting several enrolment types within conocoryphids.
Highlights
Enrolled Conocoryphe heberti is described with detail and compared with the conocoryphid Occatharia sdzuyi, both very abundant in the middle Cambrian from the Mediterranean subprovince
Se describe por primera vez en detalle el enrollamiento de Conocoryphe heberti y se compara con el posible enrollamiento de Occatharia sdzuyi, ambas son especies de conocorífidos abundantes en el Cámbrico medio de la subprovincia Mediterránea
Se analizan las estructuras coaptativas en cefalones, pigidios y ejemplares completos no enrollados de Bailiella levyi, Bailiaspis souchoni y Parabailiella languedocensis pertenecientes a la misma familia
Summary
El ejemplar enrollado y gran parte del material estudiado para el análisis de las estructuras coaptativas procede de la localidad de Murero (provincia de Zaragoza en las Cadenas Ibéricas). En las distintas secciones realizadas en la Rambla de Valdemiedes al norte del pueblo de Murero, afloran materiales del Grupo Mesones y la base del Grupo Acón (Liñán & Gozalo, 1986; Liñán et al, 2008). La edad de las misma va desde el Bilbiliense (parte alta del Cámbrico inferior) al Languedociense basal (parte alta del Cámbrico medio), esta misma edad presentan los materiales de la base del Grupo Acón que afloran en la Rambla de Valdemiedes El espécimen de Conocoryphe heberti ha sido encontrado en el nivel 18 de la sección RV1 en la Formación Murero La asociación de trilobites nos sitúa a Conocoryphe heberti en la biozona de Solenopleuropsis simula en la parte alta del Caesaragustiense superior (Liñán & Gozalo, 1986; Gozalo et al, 2003, 2008)
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