This was once part of a branch on a living tree that later broke off and was buried in sediments, where over time it was replaced by silica (commonly referred to as being fossilized or petrified).

• 它们也许曾经是某棵树枝的一部分，因在远古时代树枝断落或者被毁灭掩埋，从而沉积下来经过漫长的地壳演变，漫漫被硅土填充形成化石。