What is the least inclusive clade that contains the following taxa: a lungfish, a shark, and a lamprey? Note: this is another way of asking the name for the clade descended from the most recent common ancestor of these species (it is "least-inclusive" because it doesn't contain any other taxa not descended from that branch).
Actinopterygii
Actinistia
Agnathans
Ambulacraria
Cephalochordata
Chondrichthyes
Chordata
Cyclostomata
Dipnoi
Deuterostomia
Hemichordata
Echinodermata
Gnathostomata
Myxiniformes
Olfactores
Osteichthyes
Petromyzontiformes
Rhipidistia
Sarcopterygii
Tetrapoda
Urochordata
Vertebrata
None of the above
