Sadly, this isn't a Taylor Swift quiz.
In each question, a group/clade of organisms will be named.
One of the four options below it will be the name of an organism/group that belongs within that clade.
Try to choose the right one.
Class Calceria
Cnidarians
Schiphozoans
Protostomes
Ctenophores
Class Hexactinellida
Lophotrochozoans
Deuterostomes
Cnidarians
Ecdysozoans
Annelids
Acorn worms
Schiphozoans
Ctenophores
Lophotrochozoans
Hemichordates
Anthozoans
Deuterostomes
Ctenophores
Nematodes
Hydrozoans
Class Demospongia
Protostomes
Deuterostomes
Lophotrochozoans
Cnidarians
Porifera
Hemichordates
Ecdysozoans
Echinoderms
Ctenophores
Class Hexactinellida
Arthropods
Annelids
Flatworms
Anthazoans
Ectoprocts
Arthropods
Nematodes
Hydrozoans
Flatworms
Arthropods
Echinoderms
Cnidarians
Annelids
Schiphozoans
Ctenophores
Acorn worms
Mollusks
Petromyzontida
Myxini
Eutherians
Nematodes
Annelids
Pterobranchs
Hydrozoans
Arthropods
Flatworms
Echinoderms
Cnidarians
Chordates
Lophotrochozoans
Ctenophores
Class Calceria
Hemichordates
Nematodes
Lophotrochozoans
Diploblasts
Echinoderms
Cnidarians
Ecdysozoans
Arthropods
Acorn worms
Anthozoans
Nematodes
Echinoderms
Pterobranchs
Hydrozoans
Nematodes
Mollusks
Cephalochordates
Hydrozoans
Mollusks
Arthropods
Urochordates
Hydrozoans
Class Demospongia
Annelids
Myxini
Chondrichthyans
Lobe-Finned Fishes
Tetrapods
Petromyzontida
Acinista
Dipnoi
Chondrichthyans
Acinista
Synapsids
Myxini
Petromyzontida
Dipnoi
Petromyzontida
Hagfish
Eutherians
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