Phacopida

Yanhaoia wynnei

Order Phacopida / Suborder Phacopina / Superfamily Phacopoidea / Family Pterygometopidae

Katian (Late Ordovician)Yunnan; Myanmar

Yanhaoia wynnei — photo 1 — Photo 1 · Zhou Tianrong researcher, who studied the type species Cast model of the lectotype GSI 11576 (Myanmar; Fortey (Yunnan; Guyu) et al., 2022) Literature specimen (Myanmar; Fortey et al., (Yunnan; Tuyang Tuseng 2022) Po)

Yanhaoia wynnei — photo 2 — Photo 2 · Zhou Tianrong researcher, who studied the type species Cast model of the lectotype GSI 11576 (Myanmar; Fortey (Yunnan; Guyu) et al., 2022) Literature specimen (Myanmar; Fortey et al., (Yunnan; Tuyang Tuseng 2022) Po)

Yanhaoia wynnei — photo 3 — Photo 3 · Zhou Tianrong researcher, who studied the type species Cast model of the lectotype GSI 11576 (Myanmar; Fortey (Yunnan; Guyu) et al., 2022) Literature specimen (Myanmar; Fortey et al., (Yunnan; Tuyang Tuseng 2022) Po)

Yanhaoia wynnei — photo 4 — Photo 4 · Zhou Tianrong researcher, who studied the type species Cast model of the lectotype GSI 11576 (Myanmar; Fortey (Yunnan; Guyu) et al., 2022) Literature specimen (Myanmar; Fortey et al., (Yunnan; Tuyang Tuseng 2022) Po)

Classification

Order Phacopida / Suborder Phacopina / Superfamily Phacopoidea / Family Pterygometopidae

Genus

Yanhaoia Zhou, Dean, Yuan & Zhou, 1998

Genus author

Zhou Zhiyi, Dean W. T., Yuan Wenwei,

Genus etymology

Yanhao, in honour of Prof. Lu Yanhao, the renowned Chinese stratigrapher, palaeontologist and trilobite

Species

Y. wynnei (Reed, 1915)

Species author

Reed F. R. C.

Species etymology

Wynne, a surname

Age

Katian (Late Ordovician)

Distribution

Yunnan; Myanmar

Synonyms

Phacops (Pterygometopus) dagon var. wynnei

Diagnosis

Compared with the type species Yanhaoia huayinshanensis, this species has an oblique-upward S3 glabellar furrow, flatter thoracic pleural furrows, a more sloping anterior part of the pygidium, and a more segmented pygidial axis.