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Qingshuiaspis
Taxonomy
Qingshuiaspis was named by Shan et al. (2022). It is not extant.
It was assigned to Shuyuidae by Shan et al. (2022).
It was assigned to Shuyuidae by Shan et al. (2022).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Qingshuiaspis Shan et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| X. Shan et al. 2022 | Medium-sized jawless fish; subtriangular headshield, width greater than length; posterior margin of the headshield protruding dorsally to form a median dorsal ridge and posteriorly to form a median dorsal spine; cornual process spine-shaped, projecting caudo-laterally; inner cornual process shorter than the cornual process, spine-shaped, projecting caudually; median dorsal opening longitudinal oval in outline with anterior end reached the rostral margin; orbital opening large, dorsally positioned; pineal opening small, located between orbital openings; seven pairs of lateral transverse canals, one dorsal commissure, no median dorsal canal; lateral margin of the headshield smooth; six pairs of branchial openings; ornamentation composed of coarse granular tubercles. |
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| References: Kiessling 2004, Carroll 1988 | |||||