Which group was first formed between Dinosaur Pile-Up and Enanitos Verdes?
Dinosaur Pile-Up Dinosaur Pile-Up are an English alternative rock band who formed in late 2007. Hailing from Leeds, West Yorkshire. Current members are lead singer and guitarist Matt Bigland, drummer Mike Sheils and bassist Jim Cratchley. Their past members include Steve Wilson (2008-2010), Tom Dornford-May (2008-2010), Tommy Davidson (2008), Harry Johns (2010-2011), James Sacha (2013).
Marginocephalia Marginocephalia (/mär′jə-nō-sə-făl′ē-ən/ Latin: margin-head) is a clade of ornithischian dinosaurs that is characterized by a bony shelf or margin at the back of the skull. These fringes were likely used for display. There are two clades included in Marginocephalia: the thick-skulled Pachycephalosauria and the horned Ceratopsia. All members of Marginocephalia were herbivores. They basally used gastroliths to aid in digestion of tough plant matter until they convergently evolved tooth batteries in Neoceratopsia (or "new Ceratopsia") and Pachycephalosauria. Marginocephalia first evolved in the Jurassic Period and became more common in the Cretaceous. They are basally small facultative quadrupeds while derived members of the group are large obligate quadrupeds. Primitive marginocephalians are found in Asia, but the group migrated upwards into North America