Questions and Answers
How many eyes does the horseshoe crab have on top of its prosoma?
Which part of the horseshoe crab is often mistaken as a stinger but is actually used for steering and flipping?
How many pairs of appendages does the horseshoe crab have on the underside of its prosoma for walking?
Which order of Merostomata includes horseshoe crabs like Carcinoscorpius rotundicauda and Tachypleus tridentatus?
Signup and view all the answers
How many fossil species from the Paleozoic Era are included in the extinct order Eurypterida of Merostomata?
Signup and view all the answers
What is the function of the telson on a horseshoe crab?
Signup and view all the answers
Which body segment of the horseshoe crab is covered by a dorsal carapace?
Signup and view all the answers
How many pairs of appendages does the horseshoe crab have on the underside of its prosoma for walking?
Signup and view all the answers
Which order of Merostomata includes the extinct Gigantostraca, with 200 fossil species from the Paleozoic Era?
Signup and view all the answers
What is the primary purpose of the chelicera in a horseshoe crab?
Signup and view all the answers
How many body segments are present in a horseshoe crab?
Signup and view all the answers