TABLE 1. Shell measurements (in mm) and number of specimens of fossil holoplanktonic mollusk from the Toukoshan Formation, Miaoli, northern Taiwan. NA means the feature cannot be measured. Dash means the feature was not measured in the specimen. Tilde symbol means either an average value (for multiple specimens) or an estimated value due to incomplete preservation (e.g., missing shell parts).
| Species | Number of specimens | ShH | ShW | HA | WA | WJ | RH | ShD |
| Atlanta turriculata | 1 | 0.73 | - | 0.73 | 0.88 | - | - | 1.88 |
| Creseis acicula | 4 | ~4.4 | ~0.52 | - | - | - | - | - |
| Styliola subula | 1 | 2.31 | 0.46 | - | - | - | - | - |
| Cavolinia globulosa | 2 | ~5.65 | ~4.41 | NA | NA | - | - | - |
| Cavolinia cf. gibbosa | 1 | 7.18 | 5.53 | NA | NA | NA | ~1 | - |
| Cavolinia cf. tridentata | 1 | NA | NA | NA | NA | NA | NA | - |
| Diacavolinia longirostris | 9 | ~4.5 | ~3.56 | ~0.7 | ~1.88 | ~0.8 | ~1.17 | - |
| Diacavolinia cf. bandaensis | 1 | NA | 3.6 | NA | NA | NA | NA | - |
| Diacria cf. philippinensis | 2 | 6.55 | NA | NA | NA | NA | - | - |
| Telodiacria quadridentata | 2 | ~2.44 | ~1.76 | NA | NA | NA | - | - |
