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Phylum Chordata

Phylum Chordata. Order Orectolobiformes. Mouth completely in front of eyes Both dorsal fins without spines Five pairs of gill slits Anal fin present Broad snout . Family Ginglymostomatidae. two spineless, rounded dorsal fins with the first dorsal fin much larger than second

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Phylum Chordata

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  1. Phylum Chordata

  2. Order Orectolobiformes • Mouth completely in front of eyes • Both dorsal fins without spines • Five pairs of gill slits • Anal fin present • Broad snout

  3. Family Ginglymostomatidae • two spineless, rounded dorsal fins with the first dorsal fin much larger than second • one anal fin • moderately long barbels reach the mouth

  4. Ginglymostoma cirratum-nurse shark Location • Size: 7.5-9.75 feet • Weight: 200-367 lbs. (typical) • Nurse sharks are nocturnal and will often rest on sea floor during the day in groups of up to 40 sharks sometimes piled on top of each other

  5. Family Rhincodontidae • A unique color pattern of light spots and vertical and horizontal stripes, in the form of a checkerboard • No subterminal notch on caudal fin • Large first and small second dorsal fin • Very large pectoral fins (much larger than pelvic)

  6. Rhincodontypus-whale shark • Size: 13-39 feet; believed to reach maximum size of 59 feet • Weight: Up to 26,000 lbs. • Largest fish alive today • Live over 70 years • Docile and at times playful with divers

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