nomen | ''Psilotum nudum'' at the Sydney Opera House | nomen novum | Nomen nescio | Nomen |
"Arkansaurus fridayi" is the informal name of a dinosaur that was discovered in Lockesburg, Arkansas.
Another possible brachiosaurid is the unnamed taxon informally named Angloposeidon from the Wessex Formation of England.
"Daitingopterus" (meaning "Daiting Wing") is a nomen nudum, meaning that it is not a valid scientific name.
chamaensis from Desmatosuchus, but the name Heliocanthus remained a nomen nudum until 2007, where it was thoroughly rediscribed in a paper published by the Journal of Systematic Palaeontology.
Crocca is internationally known for having proposed, in 2006, a new Nomen nudum taxonomic system that would include the hypothetical bacterium thought to have been detected on Mars by the Viking lander in 1976.
Gulliveria D'Abrera & Bálint, 2001 (may be nomen nudum; non Castelnau, 1878: preoccupied)
Typhlichthys eigenmanni (nomen nudum) was described as a fourth species in the genus from Camden County, Missouri.
"Unicerosaurus" is a nomen nudum coined by creation scientist Carl Baugh.