Clavofabella Martinsson, 1955

Guillam, Elvis, Forel, Marie-Béatrice, Song, Junjun & Crasquin, Sylvie, 2022, Late Devonian-early Carboniferous ostracods (Crustacea) from South China: taxonomy, diversity and implications, European Journal of Taxonomy 804, pp. 1-62 : 8

Genus Clavofabella Martinsson, 1955

Type species

Clavofabella incurvata Martinsson, 1955 by original designation.

Preliminary remark

The original diagnosis of Clavofabella by Martinsson (1955) is questionable because it does not include characters shared by all specimens: “Dolonate flanges do not meet posteriorly. Dolon that continues forwards in a velar ridge or a velar bend” ( Martinsson 1955: 23). These structures are absent in non-dolonate specimens described or mentioned by Martinsson in the same paper in Clavofabella multidentata Martinsson, 1955, Clavofabella incurvata Martinsson, 1955 and Clavofabella reticristata (Jones, 1888). We follow the diagnosis of Clavofabella provided in Moore (1961) because it is based on characters shared by all forms: “inequivalved, RV overlapping LV; hinge consisting of median groove with corresponding ridge and lateral elongate pits and sockets; unisulcate […]; surface pitted or reticulate, marginal structure tuberculate” ( Moore 1961: 174). Moore (1961) furthermore indicates that velar structures are developed as ridge but that in heteromorphs they are wider and form posterior flanges that do not meet.