Dinosaur Skull ★★

Taken all the way down to base materials, one Dinosaur Skull is 3 crafting steps deep and needs 3 intermediates — Hallowed Water ×1, Titanium Ingot ×1 and Titanium Nugget ×1 — which resolve to 8 distinct raw materials totalling 20 units, plus 18 crystals.

That bill outweighs 7,876 of the 13,602 recipes tracked here and 1,141 of the 2,216 Goldsmith ones, and 337 recipes nest deeper.

Only 4 of those crystals go into the final step; the other 14 are burned by the intermediates, so the real crystal cost is 9 Fire Crystal, 5 Water Crystal, 2 Fire Cluster and 1 other kind.

The chain crosses three disciplines — Goldsmith to Lv 60, Alchemist to Lv 56 and Blacksmith to Lv 56 — so no single class can finish it unaided.

7 of the 8 raw materials come out of the ground, and one of them is time-gated: Abalathian Mistletoe (6:00, 18:00). The widest gap between consecutive opening times is 12 Eorzean hours, about 35 real-world minutes.

Of the intermediates, Titanium Nugget has the widest use: 112 recipes call for it, spanning six of the eight crafting classes.