Order: PHACOPIDA Salter, 1864
Suborder: PHACOPINA Struve, 1959
Superfamily: ACASTOIDEA Reijers, 1972
Family: ACASTIDAE Delo, 1935
Subfamily: ASTEROPYGINAE Delo, 1935
Genus RHEINGOLDIUM Basse, 2003
Diagnosis
by Bignon and Crônier, 2014
Cephalon: Frontal lobe diamond shaped; axial furrows curved between S2 and S3; 6–10 lenses per dorsoventral file of visual surface; genal spine as long as glabella; lateral border rather narrow and developed on genal spine.
Pygidium: Eleven
to 13 pygidial axial rings; 5 pleural segments, rounded pleural bands; pleural furrows rather wide; 5 pairs of pygidial spines mainly developed from posterior pleural bands, slightly longer than pleural width (tr.) aligned with corresponding pleural segments; triangular terminal spine as wide as axis.
Occurence
There are 2 species of Rheingoldium, but only R. marocanensis occurs in Morocco. It is found in the upper Emsian. A list of all species can be found below.
Species
Rheingoldium feldbergensis Basse, 2003 (upper Emsian – Germany)
Rheingoldium marocanensis Morzadec, 2001 (upper Emsian – Morocco)
References
Bignon, A., Crônier, C., 2014. The systematics and phylogeny of the Devonian subfamily Asteropyginae (Trilobita: Phacopida). Journal of Systematic Palaeontology 12, 637–668.