The Occurrence of a Sauropod Dinosaur in the Trinity Cretaceous of Oklahoma

Larkin, Pierce

doi:10.1086/621694

Cited by 9 publications

(7 citation statements)

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“…Other body fossils, including teeth, are known from Texas, southeastern Oklahoma, and southwestern Arkansas (Larkin, 1910;Langston, 1974;Pittman, 1986) and have been assigned to either Pleurocoelus or Astrodon. Both of these taxa were based on undiagnostic material from the Arundel Formation of Maryland, have had a checkered taxonomic history (Lull, 1911;Gilmore, 1921a;Ostrom, 1970;Langston, 1974), and were tentatively assigned to the Brachiosauridae by Langston (1974).…”

Section: Early Cretaceousmentioning

confidence: 99%

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Lucas¹,

Hunt²

1989

Geological Society of America Special Papers

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Sauropod dinosaurs have a temporally disjunct distribution in the North AmericanWestern Interior during Cretaceous time, here referred to as the sauropod hiatus. Sauropod body and ichnofossils are present in inland basinal and coastal deposits of Aptian-Albian age in Wyoming, Texas, Oklahoma, and Arkansas. Body fossils of sauropods (the titanosaurid Alamosaurus) occur in inland basinal deposits of Maastrichtian age in Texas, New Mexico, Utah, and Wyoming. No sauropods of Cenomanian-Campanian age are known from a Western Interior sedimentary record dominated by coastal deposits and essentially devoid of inland basinal deposits. Dinosaur ichnofaunas from late Albian coastal deposits in New Mexico, Oklahoma, and Colorado lack sauropod footprints, and thus suggest sauropod disappearance from Western Interior coastal environments by the end of Early Cretaceous time.These observations suggest two scenarios: (1) sauropods abandoned Western Interior coastal environments at the end of the Albian, but persisted in Western Interior inland basinal environments throughout Cretaceous time, or (2) sauropods became extinct in the Western Interior at the end of the Albian and reinvaded during the Maastrichtian. Choosing between these scenarios depends on an evaluation of negative evidence. However, the close phylogenetic relationship of Alamosaurus to South American titanosaurids, the absence of sauropod fossils in inland deposits of the Campanian Two Medicine and Judith River Formations, and the availability of a dispersal route between North and South America near the end of Cretaceous time support the second scenario. Thus, sauropods apparently became extinct in the Western Interior near the end of the Albian, then reinvaded from South America during the Maastrichtian but were only able to establish themselves in inland basinal environments. The extinction of sauropods in the Western Interior at the end of Early Cretaceous time may reflect an unrecognized terrestrial extinction coincident with the well-known severe marine extinction caused by a major late Albian regression.

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Section: Early Cretaceousmentioning

confidence: 99%

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Lucas¹,

Hunt²

1989

Geological Society of America Special Papers

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“…While these are not the first dinosaur remains found in the area, they are the most important. Pierce Larkin (1910) described a coracoid of a large sauropod from the Trinity (Lower Cretaceous). The bone was found about 25 miles almost due west of the location of the type.…”

mentioning

confidence: 99%

Acrocanthosaurus atokensis, a New Genus and Species of Lower Cretaceous Theropoda from Oklahoma

Stovall¹,

Langston²

1950

American Midland Naturalist

103

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A new genus and species of aberrant Theropoda based on remains of two individuals from the Trinity sands of southeastern Oklahoma is described. All important parts of the skeletons are represented and indicate an animal of exceptional size. The genus is characterized by greatly elongated and massive neural spines in allusion to which the generic name Acrocanthosaurus is proposed. In general, the skeletal features indicate a large rather advanced carnosaur, which, however, had not yet reached the high degree of development present in the Upper Cretaceous deinodonts. The relationships to other longspined forms are discussed. Despite marked similarities to certain members of the Megalosauridae, the present genus appears most closely allied to the Allosauridae. The status of Altispinax is discussed.

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“…(e.g., Larkin, 1910;Langston, 1974;Cifelli, 1997;Wedel et al, 2000;Weishampel et al, 2004;D'Emic, 2013), from Utah (Brontomerus mcintoshi; Cedarosaurus weiskopfae) (Taylor et al, 2011), and from the Cloverly Formation of Montana and Wyoming (including Sauroposeidon) (Tidwell et al, 1999;Ostrom, 1970;Weishampel et al, 2004;Woodruff, 2012;D'Emic and Foreman, 2012;Mannion et al, 2013;Oreska et al, 2013). The nodosaurid taxon Sauropelta was present in the Aptian of the Little Sheep Mudstone of the Cloverly Formation in the western United States (e.g., Ostrom, 1970;Kirkland et al, 1997;Oreska et al, 2013).…”

Section: Aptian Dinosaur Faunas Because the Arundelmentioning

confidence: 99%

The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia

Brownstein¹

2018

Palaeontol Electron

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The Cenomanian to Maastrichtian of the Late Cretaceous saw the flooding of the interior of North America by the Western Interior Seaway, which created the eastern landmass of Appalachia and the western landmass of Laramidia. Though Appalachian dinosaur faunas are poorly known, they are nevertheless important for understanding Cretaceous dinosaur paleobiogeography and ecology. In order to better track the vicariance of eastern and western North American dinosaur faunas over the duration of the Cretaceous, the former were compared with the latter from the Aptian to Maastrichtian Stages of the Late Cretaceous using several similarity indices. The data gathered from biogeographic similarity indices suggest that an almost completely homogenous North American dinosaur fauna found in the Early Cretaceous experienced significant vicariance, splitting into a Laramidian fauna differentiated by the presence of ceratopsids, pachycephalosaurids, saurolophids, lambeosaurines, ankylosaurids, therizinosaurids, and troodontids and an Appalachian fauna characterized by the lack of the aforementioned groups and the presence of non-hadrosaurid hadrosauroids, massive hadrosauroids, basal hadrosaurids, leptoceratopsians, "intermediate"-grade tyrannosauroids, and nodosaurids between the Cenomanian and Campanian, with these two faunas later experiencing limited dispersal after the disappearance of the Western Interior Seaway from the American Interior during the Maastrichtian. Dinosaur provincialism and ecology on Appalachia are also investigated and discussed.

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The Occurrence of a Sauropod Dinosaur in the Trinity Cretaceous of Oklahoma

Cited by 9 publications

References 0 publications

Untitled

Untitled

Acrocanthosaurus atokensis, a New Genus and Species of Lower Cretaceous Theropoda from Oklahoma

The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia

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