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Fish Non-dinosaurian reptiles | Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images | | Dasygnathus | Misidentification. | Huxley | A misidentified ornithosuchid archosaur whose name was preoccupied by MacLeay, 1819. It was later renamed Dasygnathoides. | | Palaeoctonus | Misidentification. | Cope | Dubious genus of misidentified phytosaur. | | Suchoprion | | Misidentification. | Cope | Dubious genus of misidentified phytosaur. | Dinosaurs Laelaps trihedrodon, Cope criticizes Dryptosaurus O. W. Lucas collected the first remains of what would later in the year be named Laelaps trihedrodon from Quarry I of the Saurian Hill at Garden Park, Colorado.[2] Edward Drinker Cope would describe the material later in the year in a short paper titled "On a carnivorous dinosaurian from the Dakota beds of Colorado."[3] The "Dakota beds" he references are actually Morrison Formation strata.[2] Cope claims to have a skeleton of unspecified completeness on which to establish the new species, but only describes a partial dentary which has 5 successional teeth, 2 functional teeth, and one tooth missing from its socket.[3] All of the preceding material has since been lost to science with the exception of 5 broken, partial tooth crowns.[4] From the now missing dentary, Cope infers that the creature is a carnivore and compares its dentition to that belonging to other members of his infamous "Laelaps" genus, L. aquilunguis and L. incrassatus.[3] Cope concludes the paper with a pointed criticism of his rival O. C. Marsh's attempt to rename the Laelaps genus Dryptosaurus because the generic name Laelaps has been used in entomology.[5] Cope claims that since the mite genus Laelaps was a synonym that the name was not truly preoccupied and Marsh's erection of Dryptosaurus has therefore created a new, redundant synonym of Laelaps the dinosaur.[5] However, subsequent researchers have supported Marsh's new name. Apatosaurus - Apatosaurus specimen found with preserved gastroliths.[6]
New genera Synapsids Non-mammalian | Name | Novelty | Status | Authors | Age | Unit | Location | Notes | Images | | Archaeobelus | Valid | See also Footnotes References - Cannon, G.L. (1907). Sauropodan gastroliths. Science 24, 116.
- Cope, E.D. (1877). On a carnivorous dinosaurian from the Dakota beds of Colorado. Bull. U.S. Geol. Surv. Territories 3: 805-806.
- Sanders F, Manley K, Carpenter K. Gastroliths from the Lower Cretaceous sauropod Cedarosaurus weiskopfae. In: Tanke D.H, Carpenter K, editors. Mesozoic vertebrate life: new research inspired by the paleontology of Philip J. Currie. Indiana University Press; Bloomington, IN: 2001. pp. 166 180.
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