Which anatomical feature characterizes members of the order Carcharhiniformes?
Answer
The presence of nictitating membranes
Sharks in the order Carcharhiniformes are characterized by having two dorsal fins, an anal fin, and protective third eyelids known as nictitating membranes.
Related Questions
To which biological Class does the smooth hammerhead shark, *Sphyrna zygaena*, belong?What key physiological trait is shared among members of the class Chondrichthyes?Which anatomical feature characterizes members of the order Carcharhiniformes?What feature unites all species within the family Sphyrnidae?How is the specific species epithet, *zygaena*, commonly interpreted in biological contexts?How does the smooth hammerhead's cephalofoil differ from that of the scalloped hammerhead (*Sphyrna lewini*)?What is believed to be a functional role of the hammer-shaped head structure?Which other shark types are mentioned as belonging to the same order, Carcharhiniformes, as the smooth hammerhead?What is the general global distribution of *Sphyrna zygaena*?Why is accurate taxonomic identification critical for the smooth hammerhead according to conservation efforts?