Table 1 Overview of eye system reports on Chengjiang arthropods

Acanthomeridion serratum⁸¹

- no evidence for eyes^13,81,85

- in-depth micro-CT analyses are pending

Cindarella eucalla⁵⁴

- large ventrally stalked eyes clearly preserved, protruding beyond the headshield^{79,86,87,88,89}

-⁹⁰

- eyes on dorsally preserved fossils as weak exoskeletal swellings, putatively ventrally located^{13,45,85,86,87,88,91}

- in-depth micro-CT analyses are pending

Saperion glumaceum⁹²

- eyes on dorsally preserved fossils as weak exoskeletal swellings, putatively ventrally located^{13,45,85,86,87,88,89,92}

- in-depth micro-CT analyses are pending

Sinoburius lunaris¹³

- presence of eyes speculated^{13,85,86,87,88,89,92,93}

-^94,95 - ventrally located⁹⁵

Skioldia aldna¹⁴

- eyes on dorsally preserved fossils as weak exoskeletal swellings, putatively ventrally located^13,85,88,96

- in-depth micro-CT analyses are pending

Squamacula clypeata¹⁴

- no evidence for eyes^{13,85,88,96,97,98}

- in-depth micro-CT analyses are pending

Xandarella spectaculum¹³

- eye bulges preserved dorsally, but are described to have been ventrally, stalked, similar to Cindarella and Sinoburius^{13,85,87,88,91,93,96}

- in-depth micro-CT analyses are pending