They discovered that a large section of one plate has broken off its main slab; the scientists say this section, which is roughly the size of Delaware, could be propelled violently upward during an earthquake and generate an enormous tsunami.
As you get closer, however, you will begin to make out an immense, stainless-steel teardrop — the Tear of Grief — hanging in a jagged crack that runs down the middle of the main slab.
You watch as he makes progress by squeezing himself into a steep corner to one side of the main slab, like the corner of a room where two walls meet.
The 80,000-ton main slab launched from a slope, then dropped 550 meters and landed near the Happy Isles Nature Center.
During preparation, however, the main slab was used as a guide to fabricate the missing parts of the lesser slab, and in 1991 the partially forged slab was sold to the Wyoming Dinosaur Center.
Chen and colleagues initially interpreted this banding pattern as an artifact of the splitting between the main slab and counter-slab in which the original specimen was preserved.
However, a 2013 paper pointed out that the adult specimen did not belong with the nest, its skull having no sedimentary connection to the main slab where the juveniles occurred, but had been glued onto it.
The paper mentions in two places, and includes a figure illustrating the point that, one of the legs and the tail are counterparts that were composited into the main slab.
The holotype of Limnofregata azygosternon (USNM 22753) contains a nearly complete sternum preserved in left ventrolateral view on a small block that is counterpart to the main slab.
Cut a rectangle around your traced blade to separate it from the main slab.
