| Hong et al. (2003) |
2003 |
Trilobites from the Lejopyge armata Zone (Upper Middle Cambrian) of the Machari Formation, Yongwol Group, Korea |
| Hong et al. (2003) |
2003 |
The Late Cambrian trilobite Irvingella from the Machari Formation, Korea: evolution and correlation |
| Hong and Choi (2015) |
2015 |
Cambrian series 3 agnostoid triloties Ptychagnostus sinicus and Ptychagnostus atavus from the Machari Formation, Yeongwol Group, Taebaeksan Basin, Korea |
| Choi et al. (2016) |
2016 |
Trilobite Biostratigraphy of the lower Paleozoic (Cambrian-Ordovician) Joseon Supergroup, Taebaeksan Basin, Korea |