Asides from the aforementioned characteristics, " Litorosuchus " can also be differentiated from other archosauriforms by a unique combination of other characters : only two teeth are present on the premaxilla, and are situated close to the front of the bone; the maxillary calcaneum is a simple butt joint ( the bones meet in flat surfaces, not ball-and-socket joints ).
32.
Following the success of Jupiter it was decided to have a detailed specification so that any new stars that were built would be as near to Jupiter as possible, this specification included " the deck to be of yellow pine, Planking to be of larch-all through planks without any scarfs or butt joints, boat to be built to the approved specification but workmanship material and design to be modelled on Jupiter which is open for inspection, the committee were to inspect during the construction ."
33.
The Hall XFH naval fighter prototype flown in 1929 was the first aircraft with a riveted metal fuselage : an aluminum skin over steel tubing, Hall also pioneered flush rivets and butt joints between skin panels in the Hall PH flying boat also flying in 1929 . Based on the Italian Savoia-Marchetti S . 56, the 1931 Budd BB-1 Pioneer experimental flying boat was constructed of corrosion-resistant stainless steel assembled with newly developed spot welding by U . S . railcar maker Budd Company.
