Pachypleurosauridae indet. Middle Triassic, Lower Muschelkalk (Anisian), Gogolin Beds, Upper Silesia, Poland The vast majority of fossil vertebrate specimens in the Silesian Muschelkalk are single, isolated bones. As for the vertebrae themselves, I most often encounter vertebral centra, sometimes neural arches. Complete vertebrae, however, are truly rare – almost always separated into two parts. The…