👉 The term "Ophiobranchi" refers to a group of marine animals that are characterized by their bony skeletons, soft tissues, and long limbs. These animals include ophiophytes, which have a single spine, and ichthyosaurs, which have two spines. The term also includes other groups within the phylum Chondrichthyes, such as chondriculars, that are characterized by their bony skeleton and soft tissues.