salt wash member造句

• An unnamed mesosuchian from the Salt Wash Member of the Late Jurassic Morrison Formation of western Colorado in the United States possesses several features that are also seen in " Platyognathus ".
• Clay, mud, silt, cross-bedded sand and pebbles were later deposited by meandering streams and in flood plains, forming the locally 100 to 500 foot ( 30 to 150 m ) thick Salt Wash Member.
• This genus is also notable for having a low bony crest running all the way to the tip of the beak ( pterosaur bone crests usually do not reach the tip ) and for being the oldest known Morrison Formation pterosaur, having been found in the Salt Wash Member ( Kimmeridgian ).
• As a genus, " Brontosaurus " existed for a long span of time, and have been found in most levels of the Morrison . " B . excelsus " fossils have been reported from the upper Salt Wash Member to the upper Brushy Basin Member, ranging from the middle to late Kimmeridgian age, about 154 151 Mya.