22171 - Top Rare 3.30 Inch Spinosaurus Dinosaur Partial Caudal (Tail) Vertebra Bone Cretaceous KemKem Beds Reptile Fossils Under Study Xiphosurans are an order of

Xiphosurans are an order of arthropods related to arachnids

referring to the arid climate in present day Morocco where this marine reptile was recovered

They evolved during the Late Jurassic but were not very common until the Cretaceous period

Pseudocheirurus

22171 - Top Rare 3.30 Inch Spinosaurus Dinosaur Partial Caudal (Tail) Vertebra Bone Cretaceous KemKem Beds Reptile Fossils Under Study Xiphosurans are an order ofImpressive and rare authentic example of Spinosaurus caudal (tail) vertebra bone. This type of remains, are really rare to find, especially well preserved. The vertebral body is preserved, but not its neural spine and transverse processes. It has not glued or filled fractures. The different Geological Formations that make up the orography of the Cretaceous in the South East of Morocco have been mostly treated in an undifferentiated and not too