|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Rhynchonellata - Orthida - Heterorthidae
It was recombined as Nanorthis grandis by Castellaro (1963); it was recombined as Tarfaya grandis by Villas and Herrera (2013).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|E. Villas and Z. A. Herrera 2013||Tarfaya species with transversely elongated suboval outline, ventral and dorsal muscle fields large for the genus, and ribs of rounded cross-section|