Lanthanide

Lanthanides are a group of chemical elements, also referred to as the lanthanide series.

Characteristics and history
These elements are so named because they begin with lanthanum, and comprise a block of elemental entries in the periodic table. This group of elements includes a number of notable heavier materials. The Crystalline Entity left a specific footprint of residue materials when feeding, including lanthanides mixed with bitrium deposits, hydrocarbons, and nitrates. 

Lanthanides

 * lanthanum
 * cerium
 * praseodymium
 * neodymium
 * promethium
 * samarium
 * europium
 * gadolinium
 * terbium
 * dysprosium
 * holmium
 * erbium
 * thulium
 * ytterbium
 * lutetium