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4 results for “Ground sloth”
Fig. 2. A, B in Hypsodonty in Pleistocene ground sloths
Fig. 2. A, B. Paramylodon harlani (Owen, 1840), early Pleistocene, Hillsborough, Florida, USA. A. Left upper caniniform, UF 87042. B. Left M2, UF 87068. C, D. Glossotherium robustum (Owen, 1842), Pleistocene, General Belgrano, Buenos Aires province, Argentina. C. Left upper caniniform, MHM no catalogue number. D. Left M3, MHM no catalogue number.
Fig. 1. A. MLP 2−3 in Hypsodonty in Pleistocene ground sloths
Fig. 1. A. MLP 2−3, molariform of Megatherium americanum Cuvier, 1796, Pleistocene, Buenos Aires province, Argentina. B. UF 162356, molariform of Eremotherium eomigrans De Iuliis and Cartelle, 1999, Pleistocene, Alachua, Florida, USA. Because of the homodonty of the upper and lower megatheriine molariforms, determining the position of the isolated teeth is not reliable (except for M1, M5, and m5, but these do not have the ridges and grooves so prominent as in the illustrated material); thus, we have not attempted to identify the exact position of these teeth, but only figure them to show their occlusal features and the development of the tooth crown height.
Data from: Resolving the phylogenetic position of Darwin's extinct ground sloth (Mylodon darwinii) using mitogenomic and nuclear exon data
Mylodon darwinii is the extinct giant ground sloth named after Charles Darwin, who first discovered its remains in South America. We have successfully obtained a high-quality mitochondrial genome at 99-fold coverage using an Illumina shotgun sequencing of a 12,880 year-old bone fragment from Mylodon Cave in Chile. Low level of DNA damage showed that this sample was exceptionally well preserved for an ancient sub-fossil, likely the result of the dry and cold conditions prevailing within the cave. Accordingly, taxonomic assessment of our shotgun metagenomic data showed a very high percentage of endogenous DNA with 22% of the assembled metagenomic contigs assigned to Xenarthra. Additionally, we enriched over 15 kilobases of sequence data from seven nuclear exons, using target sequence capture designed against a wide xenarthran dataset. Phylogenetic and dating analyses of the mitogenomic dataset including all extant species of xenarthrans and the assembled nuclear supermatrix unambiguously place Mylodon darwinii as the sister-group of modern two-fingered sloths from which it diverged around 22 million years ago. These congruent results from both the mitochondrial and nuclear data support the diphyly of the two modern sloths lineages, implying the convergent evolution of their unique suspensory behaviour as an adaption to arboreality. Our results offer promising perspectives for whole genome sequencing of this emblematic extinct taxon.
Data from: Resolving the phylogenetic position of Darwin’s extinct ground sloth (Mylodon darwinii) using mitogenomic and nuclear exon data
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Allen Brain Atlas
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
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