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Showing results for tags 'saurornitholestes langstoni'.
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From the album: Dinosaurs
Saurornitholestes langstoni Judith River Fm., Fergus Co., MT, USA ~ 9 mm crown height This tooth has wear facets at the tip/apex.- 1 comment
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Identification: Dromaeosaurs have differently-sized serrations on each carina, the ones on the distal carina being much larger and pronounced than the mesial ones. The mesial carina also has a classic twist. Notes: This tooth has feeding wear facets on both the labial and lingual sides of the tip. Citation: SUES, HANS-DIETER, 1978. A new small theropod dinosaur from the Judith River Formation (Campanian) of Alberta Canada, Zoological Journal of the Linnean Society, Volume 62, Issue 4, April, Pages 381–400, https://doi.org/10.1111/j.1096-3642.1978.tb01049.x
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From the album: Dinosaurs
Saurornitholestes langstoni Judith River Formation Fergus Co., MT, USA-
- dromaeosaur serrations
- judith river
- (and 3 more)
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From the album: Dinosaurs
Saurornitholestes langstoni Judith River Formation Fergus Co., MT, USA-
- dromaeosaur serrations
- judith river formation
- (and 3 more)
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Another important dinosaur paper that is paywalled. Went the rental route again. The paper takes the first good look at the Skull of the Dromaeosaurid, Saurornitholestes langstoni from the Dinosaur Park Formation. It provided great insight into Dromaeosaurid's and specifically the dentition which we as collectors are most interested in. Similar species are found in Montana's Judith River and Two Medicine Formation. The biggest surprise were the premaxillary teeth, they are distinctive, and teeth previously identified in the Dinosaur Park Formation as Zapsalis abradens can now be identified as the second premaxillary tooth of S. langstoni. The morphology and wear patterns suggest that these may have been specialized for preening feathers. Zapsalis is one of those tooth taxons and brings into question if its indeed valid or just synonymous with Saurornitholestes. The paper makes the following statement "The similarity between the premaxillary teeth of Saurornitholestes and Zapsalis show that the latter is a dromaeosaurid and suggests that the two genera are synonymous. However the differences suggest they are distinct at least at the species level. Pending the discovery of additional Associated skeletal material from the Judith River formation of Montana it is recommended that the two genera be kept separate." The holotype tooth of Zapsalis (right) from the JRF is slightly different than the Saurornitholestes tooth. See Fig. Might just be tooth to tooth variations. https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.24241#.XXZqJ1PoYmg.twitter Cranial Anatomy of New Specimens of Saurornitholestes langstoni (Dinosauria, Theropoda, Dromaeosauridae) from the Dinosaur Park Formation (Campanian) of Alberta Philip J. Currie, David C. Evans First published: 09 September 2019 https://doi.org/10.1002/ar.24241 @hxmendoza @-Andy-
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- alberta
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