(Solved): PHYLUM: HEMICHORDATA Class: Graptolithina \( \mathrm{NO}_{2} \) Genus: Dlctyonema This graptolite h ...

PHYLUM: HEMICHORDATA Class: Graptolithina \( \mathrm{NO}_{2} \) Genus: Dlctyonema This graptolite had a many branched colony that was anchored to the ocean floor by a root-like base. It grew upward. Your fossil looks like "pencil marks" on black shale. 1) What is its mode of life? planktonic or benthic 2) Its life style can be described as: vagrant or sessile Draw the stipes 3) This fossil belongs to what order? This graptolite floated or drifted in the open oceans: It had four branches and Wis suspended from a drifting object by a nema. It is a guide fossil for the Early Ordovician. 1) The saw-teeth like cups are called Label: stipe, theca 2) How many rows of thecae? 3) What is its mode of life? planktonic or nektonic Subphylum: Chelicerata Genus species: Eurypterus remilpes Common Name: Eurypterid or Sea scorplon Eurypferias remizes lived duriag the silurian Period. It is the most commonly found eurypterid fossil and ranges up to 4 feet 3 inches long. Whole body fossils can be found in New York and OnLario. Canada. New York state forsil. Go to the side of the room to observe this fossil. 1) What kind of eyes are visible on the forsit? (oorill or ccmpeiond) 2) What is the large modified appendage called? Labeli prosoma, felson (clew, walking lep or swimmins paddie) 3) All of the appendages are on the. 4) What is the "spike" at the end of the abdomen called? 5) Do we have euryptends in the occans today? 6) What "living relative" do eurypterids have in the oceans today?