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.
|Display all details of Pterosaur tracks (Pteraichnus saltwashensis) housed in the Yingliang Stone Nature History Museum, Yingliang Stone Nature History Museum||Xing, Lida||0||0|
|Display all details of Theropod track (Eubrontes isp) from Huangyangquan track site, Wuerhe District, Karamay City, Xinjiang, China||1||1|
|Display all details of Waukesha Panderodus||Supplementary data for Murdock, D. J. E. & Smith, M. Paul. 2021. PANDERODUS FROM THE WAUKESHA LAGERSTÄTTE OF WISCONSIN, USA – THE ANATOMY OF PRIMITIVE MACROPHAGOUS VERTEBRATE PREDATORS. Papers in Palaeontology||Murdock, Duncan J E||8||1|
|Display all details of North Carolina Museum of Natural Sciences Herpetology collection||The North Carolina Museum of Natural Sciences' herpetology collection, started in the late 1800s by Museum co-founder C.S. Brimley, contains over 84,300 cataloged records (March 2015) that consist of approximately 265,000 specimens. It is one of the largest and most complete regional collections in the United States. Approximately 80% of the collection consists of North Carolina material, although at least 47 states, 58 countries, and 675 species are represented. Other states with substantial representation include California, Delaware, Georgia, Florida, Louisiana, New Jersey, New York, South Carolina, Tennessee, and Virginia. Other countries with substantial representation include Laos, Vietnam, and Gabon. Most of the specimens have been accumulated since the 1960s when Emeritus Curator of Herpetology William Palmer, then Curator of Lower Vertebrates, began caring for the collections. In 2014, the North Carolina Museum of Natural Sciences acquired most of the herpetology collections at the Charleston Museum and Appalachian State University (R. Wayne Van Devender’s collection), and these are currently being incorporated. The completed processing of these two acquisitions will make the North Carolina Museum of Natural Sciences’ herpetology collection the major holdings for South Carolina, as well as North Carolina. Other significant past acquisitions include Duke University (Joseph Bailey's collection), Davidson College (E. E. Brown's collection), and Virginia Commonwealth University (Charles Blem's collection). The collection houses fluid-preserved specimens, skeletons, skins, tissues for molecular analyses, and other materials. Photographic vouchers, field notes, other museums' records of North Carolina holdings, and specimen data sheets are also maintained as part of the materials documenting these resources. Researchers and the management community use the collection to identify, document geographic distributions, learn the biology, and determine the conservation status of populations and species of amphibians & reptiles in North Carolina and the world beyond.||28||13|
|Display all details of Unique damage-related, gap-filling tooth replacement in pycnodont fishes||Most jawed vertebrates (gnathostomes) replace their teeth throughout life, ‘polyphyodonty’, and there is currently great interest in its molecular and cellular basis, particularly in fish. While much has still to be elucidated, it appears that whichever tooth replacement mechanism is used, only one tooth replaces one predecessor, at any one time. Here we present fossil crushing dentitions of two extinct pycnodont fishes, Pycnodus zeaformis and Pycnodus maliensis. Their surface features and X-ray micro-CT virtual sections show no evidence of one-for-one replacement. Instead, individual large teeth were replaced by multiple small teeth, for which, as far as we could ascertain, there is no known mechanism. This occurred where underlying dentigerous bone was damaged. Small teeth also developed where parts of large teeth had broken off, and in gaps between large teeth created by the geometry of their close alignment in rows. We compared the virtual sections to those of functionally analogous crushing dentitions of three modern fishes. Contrasting greatly to the pycnodonts, each showed an orderly, one-for-one replacement, typical of osteicthyans. We propose that the pycnodont specimens exhibit a gap-filling tooth addition hitherto unseen in gnathostomes, and that the oral epithelium retained an initiatory competence throughout life, with a programming of ‘if there is a gap, fill it’. This would also have facilitated the addition of large teeth in rows, in space provided by ontogenetic growth. We hypothesise that gaps were registered as an absence of pressure at the crushing surface, initiating tooth development, as in the modern cichlid Astatoreochromis alluaudi.||Collins, Sally||5||5|
|Display all details of Osteology and digital reconstruction of the skull of the early tetrapod Whatcheeria deltae||The Early Carboniferous stem tetrapod Whatcheeria deltae is among the earliest-branching limbed tetrapods represented by multiple near-complete specimens, making it an important taxon in understanding the vertebrate water-to-land transition. However, all preserved skulls of Whatcheeria suffer from post-mortem crushing and lateral compression, which has made cranial reconstruction problematic. In this study, computed tomography data of three Whatcheeria specimens were segmented using visualization software to digitally separate each individual skull bone from matrix. Digital methods were used to repair and retrodeform the bones and produce the first complete three-dimensional skull reconstruction of Whatcheeria, revealing that this taxon had one of the narrowest skulls of any known early tetrapod, a gap between the nasals, and significant overlap of the lacrimal onto the nasal and prefrontal. We provide a revised description of the cranial and lower jaw anatomy of Whatcheeria based on CT data, focusing on sutural morphology and previously unknown anatomical details. Sutural morphology is used to infer loading regime in the skull during feeding and suggests the skull of Whatcheeria was well-adapted to resist stresses induced by biting large prey with its enlarged anterior fangs.||Rawson, James||4||3|
|Display all details of Fang evolution in venomous snakes: models supporting variation of 3D tooth shape with diet||MicroCT scans and 3D mesh models from the study: Cleuren SGC, Hocking DP, Evans AR. 2021. Fang evolution in venomous snakes: adaptation of 3D tooth shape to the biomechanical properties of their prey. Evolution. DOI: ... See the text of the paper for further details.||Cleuren, Silke||102||101|
|Display all details of Carnivorous mammal crania: Convergence between thylacine and small prey-focused canids||Surface meshes for "Functional ecological convergence between the thylacine and small prey-focused canids" doi:10.1186/s12862-021-01788-8||223||222|
|Display all details of Assessment of effects of breeding status on bone morphology of female Damaraland mole-rats (Fukomys damarensis)||This project contains data for a peer reviewed published research study, the link for which is provided below. Damaraland mole-rats are highly cooperative, subterranean mammals that live in colonies in which a single female dominates breeding, while all other adult females suppress their reproductive axis, remaining as subordinate, nonbreeding helpers. We explored the consequences of breeding on bone growth and development in Damaraland mole-rats by experimentally assigning breeder versus non-breeder status to females. Experimentally assigned breeding status was maintained for over one year prior to collection and microCT scanning of the right tibia, right femur, lumbar vertebra 6, and lumbar vertebra 7.||138||36|
|Display all details of The evolution of swimming in tetrapods||Marx, Felix||5||4|