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Zachary Diggers #8 - Spinosaurus Mystery Cache

Hidden : 6/1/2026
Difficulty:
4 out of 5
Terrain:
2 out of 5

Size: Size:   other (other)

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Geocache Description:


Crew member Michael is in charge of setting up camp at each new site. He puts up the break tent and the field-lab (and orders the portaloos!) Once all of that is done, and the crew is digging away happily, he often sets up a little research station in the corner of the break tent and dives into the literature about whatever dinosaur the team are pulling out of the ground.

He’s just found a helpful illustration of parts of a Spinosaurus skeleton from 1915, but he’s struggling to match the names of each bone to its number in the illustration.  

 

Match the name of each bone to its number in the illustration, and use the formula to get the coordinates for this cache. You might need to take Michael's example and do a bit of research of your own!
("–" means subtract, and each set of brackets in a different colour makes one digit of the coords)

N53 (left angular) (flat right anterior rib – medium-sized upper right posterior tooth). (sacral vertebrae – great right rib with two cross-sections – anterior caudal vertebrae)  (medium-sized upper left posterior tooth – largest isolated tooth) (first left lower tooth – small lateral abdominal rib without cross-section)

W001 (left mandibular – left angular) (smallest tooth) . (right mandibular – left mandibular) (medium-sized upper left posterior tooth – small lateral abdominal rib without cross-section) (right mandibular – medium-sized upper right posterior tooth)

 

Spinosaurus was a huge semi-aquatic, estimated to be around 15m long and weigh up to 20 tonnes - that's about 2.5x the weight of a T-Rex! Evidence suggests that it lived like a sort of gigantic heron, standing in water and quickly snapping up fish.

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Useful information for the series

Once solved, the first eleven caches in this series can be done in a roughly circular walk, although one stretch is along a road that is not the best so please make sure you walk on the safest side of the road, and if you have geokids with you, keep an eye on them!

We've suggested two places where you can park to do this walk, you can find them in the waypoints.

Alternatively you can do eight of this group as park-and-grabs, but for three of them you'll have to get out and go for a short walk :)

 

Additional Hints (Decrypt)

Jung qbrf gur qbt fnl?

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)