Which shark worked in construction?
The hammerhead shark.
[insert pity chuckles here]
The hammerhead sharks make up the Sphyrnidae family, and are one of the more unique sharks. That’s exactly why you can’t confused it with any other… except members of its own family. Well, at least you can sort of tell them apart!
Rays and skates are closely related to sharks... except they are flattened.
The fossil record of rays/skates goes all the way to the Lower Jurassic (about 150 million years ago). Due to these animals having skeletons made out of cartilage, they leave little fossil record except teeth.
Skates belong to the family Rajidae, in the superorderBatoidea. There are more than 200 different species that are divided into 27 genera. The two subfamilies are Rajinae (hardnose skates) and Arhynchobatinae (softnose skates). "So, how can you tell the difference between a ray and skate?" Well, there are a few ways.
If you're from the Sarasota, Florida (USA) area, you might have purchased Melissa's first publication Sharks, Skates and Rays of Sarasota Bay, in which she talks about this particular animal (one that Jeffrey Carrier asked Melissa to cover).
So just who is this critter? Why, clearnose skates (Raja eglanteria), of course. A member of the only skate family, Rajidae, they are considered the most common skate in their range; they are found in the eastern part of the Gulf of Mexico, as well as all along the eastern United States shores. They have a single row of thorns along its backside, from the shoulders to the tail; usually a shade of brown or gray with many darker round spots/bars present.
TFUI Founder Melissa C. Marquez is author of all animal bios and "Behind the Fins" segments.
SEE MELISSA'S TEDx TALK HERE:
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