| Furongian agnostids of Scandinavia |
| AHLBERG, P & TERFELT, F | Cambridge University Press | 2012 |
| Furongian (Cambrian) agnostids of Scandinavia and their implications for intercontinental correlation |
| Trilobagnostus holmi (Westergård, 1922), Seite 6, Abb. Fig. 4 k,l |