Characteristics of the Kingdom of Animalia below the slide 'The Animals' the write-up Osteichthyes (cartilaginous fish) and Chondrichthyes (bony fish) should be paired oppositely Chondrichthyes is cartilagenous not bony. .
Chondroicthyes are cartilaginous fish and osteichthyes are bony fish.
Biology - Characteristics of Kingdom Animalia
Characteristics of Kingdom Animalia
Phylum Chordata is divided into a number of classes. The main six classes
are: (mammals), Aves (birds), Reptilia (reptiles), (amphibians),
(cartilaginous fish) and (bony fish).
The remaining animal phyla are invertebrates.  The phyla are:
(sponges), (arthropods), (molluscs), (cnidarians), (flatworms),
(annelids/segmented  worms), (nematodes/roundworms) and (echinoderms).
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