1139 Projects

Media are grouped by projects created by users. Projects tend to contain media tied together by a theme. A project might represent the dataset for a single peer-reviewed paper, the results of a collections digitization project, or data for a digital lesson plan.

Projects can be used to share media ownership and access between project members, and projects can also be used to publish assortments of media and specimens for access and discovery by the public. If you want to share media ownership and access with multiple users across multiple projects, consider creating a user team. Projects can be managed by teams, and users with access to that team also gain access to any projects managed by that team.

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Title Description Team Creator Media Objects
Display all details of Dinosaur Tracks From The Guará Formation This collection aims to store the 3D models of dinosaur tracks collected from the Guará Formation (Upper Jurassic of Rio Grande do Sul, Brazil) Denner Deiques Cardoso 4 2
Display all details of Anatomy of the female reproductive tract organs of the brown anole (Anolis sagrei) Female reproduction in squamate reptiles (lizards and snakes) is highly diverse and mode of reproduction, clutch size, and reproductive tract morphology all vary widely across this group of 11,000 species. Recently, CRISPR genome editing techniques that require manipulation of the female reproductive anatomy have been developed in this group, making a more complete understanding of this anatomy essential. We describe the adult female reproductive anatomy of the model reptile the brown anole (Anolis sagrei). We show that the brown anole female reproductive tract has three distinct anteriorto- posterior regions, the infundibulum, the glandular uterus, and the nonglandular uterus. The infundibulum has a highly ciliated epithelial lip, a region where the epithelium is inverted so that cilia are present on the inside and outside of the tube. The glandular uterus has epithelial ducts that are patent with a lumen as well as acinar structures with a lumen. The nonglandular uterus has a heterogeneous morphology from anterior to posterior, with a highly folded, ciliated epithelium transitioning to a stratified squamous epithelium. This transition is accompanied by a loss of keratin-8 expression and together, these changes are similar to the morphological and gene expression changes that occur in the mammalian cervix. We recommend that description of the nonglandular uterus include the regional sub-specification of a “cervix” and “vagina” as this terminology change more accurately describes the morphology. Our data extend histological studies of reproductive organ morphology in reptiles and expand our understanding of the variation in reproductive system anatomy across squamates and vertebrates. Bonnie Kircher 4 2
Display all details of Schade et al. 2022. Irritator challengeri SMNS 58022 osteology Schade, Marco 50 1
Display all details of Sinemurian Taxon Segmentations of scans of NHMUK_R36710, a crocodylomorph from the Sinemurian 16 1
Display all details of Masiakasaurus knopfleri This project collects micro-CT data and polygon derivatives for the noasaurid theropod Masiakasaurus knopfleri from the Late Cretaceous of Madagascar. Descriptions of elements appear in the following publications: Carrano, M. T., Loewen, M. A., & Sertich, J. J. (2011). New materials of Masiakasaurus knopfleri Sampson, Carrano, and Forster, 2001, and implications for the morphology of the Noasauridae (Theropoda: Ceratosauria). Carrano, M. T., Sampson, S. D., & Forster, C. A. (2002). The osteology of Masiakasaurus knopfleri, a small abelisauroid (Dinosauria: Theropoda) from the Late Cretaceous of Madagascar. Journal of Vertebrate Paleontology, 22(3), 510-534. Sampson, S. D., Carrano, M. T., & Forster, C. A. (2001). A bizarre predatory dinosaur from the Late Cretaceous of Madagascar. Nature, 409(6819), 504-506. O'Connor, Patrick 22 11
Display all details of Basal insectivore Hsiangolestes from Eocene of South China Early Cenozoic “insectivorans” possess some of the most primitive morphologies among eutherian mammals. Studies of these archaic mammals offer insights into the early diversifications of basal eutherians. Despite such importance, early fossil “insectivorans” from Asia are poorly known due to a scarcity of fossil remains, which often consist only of fragmentary jaws and teeth. Discoveries of remarkably well-preserved fossil “insectivorans”, including complete skulls and articulated postcranial skeletons, from the early Eocene Hengyang Basin in south-central Hunan Province, China, offer a rare opportunity to thoroughly study two taxa belonging to different families. Fine-grained red beds from Hengyang Basin preserve extraordinary fossils with morphological structures rarely seen elsewhere. Thin sections of a skull of Hsiangolestes youngi Zheng and Huang, 1984, for example, reveal the extremely delicate nasal and maxillary turbinates, which, as far as we are aware, are the first known from fossils of this age. We thus take this opportunity to document in detail the cranial and dental morphology, as well as postcranial skeletons, of the Hengyang “insectivorans.”. In this monograph, we describe several complete skulls and serial sections of a skull, as well as many partial skulls, mandibles, and postcranial skeletons of Hsiangolestes youngi, an Asian early Eocene insectivoran-grade mammal. We also report a new species of Naranius Russell and Dashzeveg, 1986—N. hengdongensis—an Asian early Eocene cimolestid and describe its well-preserved skulls and mandibles. Hsiangolestes is endemic to Asia. It is currently known only from the earliest Eocene Lingcha Formation, Hengyang Basin, Hunan Province, China. Naranius closely resembles Cimolestes Marsh, 1889, the type genus of the family Cimolestidae. It is mainly distributed in Asia and known from the earliest Eocene deposits in the Bumban Member of the Naran Bulak Formation, Nemegt Basin, of Mongolia, and the Lingcha Formation, Hengyang Basin, Hunan Province, China. The only record of Naranius reported outside of Asia is N. americanus from the early Wasatchian Red Hot Local Fauna, Mississippi, United States. Using PAUP and TNT search algorithms, we place these Hengyang taxa within phylogenetic context of other fossil “insectivorans” from the Mesozoic and early Cenozoic of Asia together with some well-known Holarctic taxa. A phylogenetic analysis of 290 cranial and dental characters from 36 fossil and modern insectivoran-grade taxa is presented, focusing on new materials of Hsiangolestes youngi and Naranius hengdongensis. Based on the results of our phylogenetic analyses, we propose that (1) Hsiangolestes, Prosarcodon, Sarcodon, and Sinosinopa, form a monophyletic group, for which we propose the family name Sarcodontidae; (2) the family Cimolestidae should be restricted to Naranius and Cimolestes, which are sister taxa; (3) the systematic position of Naranius americanus is uncertain; and (4) the family Micropternodontidae should be restricted to Micropternodus and its allies in North America. Xiaoming Wang 1 1
Display all details of Oltet River Valley Paleontological Project The Olteţ River Valley (ORV) Project is focused on providing paleoenvironmental and geological context to the early Pleistocene of Eurasia, specifically fossil sites from the Olteţ River Valley of Romania. This time period and region is marked by significant climatic, environmental, and faunal shifts and is the time during which Homo first appears in the Eurasian fossil record. Since 2012 our research team (led by Claire Terhune (University of Arkansas), Sabrina Curran (Ohio University), and Alexandru Petculescu (“Emil Racoviţă” Institute of Speleology)) has been working to update and revise the taxonomy and biochronology for sites in the Olteţ River Valley. One of these sites, Grăunceanu, is one of the most fossiliferous deposits from the early Pleistocene of Eastern Europe. Models included in this project stem from the following publications: Terhune CE, Curran S, Croitor R, Dragusin V, Gaudin T, Petculescu A, Robinson C, Robu M, Werdelin L. 2020. Early Pleistocene fauna of the Olteţ River Valley of Romania: Biochronological and biogeographic implications. Quaternary International 553, 14-33. Curran S, Terhune CE, Croitor R, Dragusin V, Fox DL, Garrett N, Ironside LB, Petculescu A, Pobiner B, Robinson C, Robu M, Tanţău I, Ungar P. 2021. Multiproxy paleoenvironmental reconstruction of early Pleistocene sites from the Olteţ River Valley of Romania. Palaeogeography, Palaeoclimatology, Palaeoecology 574, 110445. Terhune CE, Gaudin T, Curran SC, Petculescu A. 2021. The youngest pangolin (Mammalia, Pholidota) from Europe: Pangolin remains from the early Pleistocene locality of Grăunceanu, Romania. Journal of Vertebrate Paleontology 41(4), e1990075. Croitor R, Robinson C, Curran S, Terhune CE, Dragusin V, Pobiner B, Popescu A, Petculescu A. 2023. Early Pleistocene Ruminants (Artiodactyla, Mammalia) from the Dacian Basin (South Romania) before and after the Pachycrocuta event: implications for hominin dispersals in western Eurasia. Historical Biology: 1-49. 33 28
Display all details of Limacina pteropods micro CT-scans of two specimens from each of the five nominal Limacina species (L. retroversa s.l., L. bulimoides, L. trochiformis, L. lesueurii, L. helicina s.l.) 10 10
Display all details of Oedura gecko diversity Scans of Oedura geckos from Australia, part of an Honours Research Project by Amy Green completed in 2021. Green, A., Oliver, P., Gray, J.A., Sherratt, E. Adaptive tails: parallel evolution of “bulbous” tails in monsoonal tropics lineages of an Australia gecko radiation (Oedura). Submitted 15/6/2023 to Zool J Linn Soc ZOJ-06-2023-5425 Sherratt, Emma 0 0
Display all details of Patek Lab Project Mantis Shrimp Patek, Sheila 1 1
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