Brachylophosaurus (Short crested lizard)
Brachylophosaurus (Short crested lizard)
Named By : Charles M. Sternberg - 1953
Diet : Herbivore
Size : Estimated 7-9 meters long
Type of Dinosaur : Euornithopod
Type Species : B. canadensis (type)
Found in : Canada, Alberta - Oldman Formation. USA, Montana - Judith River Formation.
When it Lived : Late Cretaceous, 89-88 million years ago
Brachylophosaurus (/br@,kIl@f@’so:r@s/ br@-KIL-@-fo-SAWR-@s or /,braeki,loUf@’so:r@s/ brak-i-LOH-f@-SAWR-@s; meaning “short-crested lizard”, Greek brachys = short + lophos = crest + sauros = lizard, referring to its small crest) was a mid-sized member of the hadrosaurid family of dinosaurs. It was identified from a variety of bones and skeletons from the Judith River Formation of Montana as well as it is also found in the Wahweap Formation of Utah and the Oldman Formation of Alberta, which was around 81-76.7 million years ago.
Brachylophosaurus was first identified in 1953 and was first was first described in 1953 by Charles Mortram Sternberg in 1953 for a skull and a partial skull, holotype NMC 8893 that he discovered in 1936 close to Steveville in Alberta The skull was initially thought to be part of Gryposaurus (or Kritosaurus as it was then). The species that is the type of Brachylophosaurus is Brachylophosaurus canadensis. The name of the generic species is derived from the Greek brakhus, which means brachys “short”, and lophos and lophos “crest of a helmet”. The particular name is a reference to its provenance from Canada. In the following years, it was discovered that the specimen FMNH PR 862 which was a partial skull found in 1922 could be identified as B. canadensis. The type specimen was found in The middle Oldman Formation, which dates from around 78 million years back.
The holotype was the sole known and formally recognized specimen from the genus until the 1980s and the 1980s, when Jack Horner described a second species, Brachylophosaurus goodwini, in 1988. The name is a tribute to the collector and preparer Mark Goodwin. The species was based on the skull and skeleton of a partial of UCMP 130139, which was found inside the Judith River Formation of Montana in the Skull Crest. In 2005, a study by Albert P. Prieto-Marquez concluded that the observed distinctions among the two species are or were due to individual differences or due to UCMP 130139 being constructed with an upside-down skull crest. B. goodwini might be an intermediate synonym for B. canadensis.
Another Canadian discovery was specimen TMP 1990.104.0001 which is a fragmented skull skeleton in the year 1990 found at Milk River in Alberta and taken in 1990 by Tyrrell employee Darren Tanke and crew. Brachylophosaurus has since become more recognized from fossils discovered in Montana rather than Alberta but regardless of its name, it has been known as canadensis. This includes specimens MOR 720, a skullcase as well as MOR 794, which is an extremely complete skeleton that includes the skulls of an older as well as MOR 940 which is another braincase. In close proximity to Malta, Montana an entire bonebed of Brachylophosaurus fossils was discovered with more than eight hundred specimens and have been cataloged under the MOR 1071 number.
In 1994, at Malta within Phillips County, amateur paleontologist Nate Murphy discovered a complete and undamaged Brachylophosaurus skull, which he named “Elvis”. In the following years, more interesting discoveries were made through Murphy as well as his group at the Judith River Dinosaur Institute. On the 20th of July, 2000, a specimen JRF 115H, or “Leonardo”, a fully articulated and partially “mummified” skeleton of a subadult Brachylophosaurus was discovered in the hands of Dan Stephenson. It is regarded as to be one of the most stunning dinosaur discoveries ever made, and was listed within the Guinness Book of World Records. They then discovered “Roberta”, an almost complete gracile skeleton. They also discovered “Peanut”, a partially preserved juvenile, with a few skin impressions. “Peanut” was discovered in 2002 by Robert E. Buresh and is displayed in the Institute in Malta, MT. It was in the month of May that Steven Cowan, public-relations coordinator at the Houston Museum of Natural Science located an Brachylophosaurus Skeleton, later dubbed “Marco” from the same region as Leonardo.