Date Note | Date span given to other drawings of the teeth of this species |
Administrative History | Collected/drawn as part of the research for Louis Agassiz's 'Recherches sur les Poissons Fossiles' (1833-1843/1844). |
CustodialHistory | From a folder marked 'Psammodus, Helodus, Strophodus, Ctenoptychius, Petalodus'. |