Turtles are one of the most impressive vertebrates. Much of the body is either hidden in a shell or can be drawn into it. Turtles impress with their individual longevity and their often peaceful disposition. Also, with their resilience, they have survived all extinction events since their emergence in the Late Triassic. Today's diversity of shapes is impressive and ranges from the large and high domed Galapagos turtles to the hamster-sized flat pancake turtles. The holotype of one of the oldest fossil turtles, Proganochelys quenstedtii, is housed in the paleontological collection in Tübingen/Germany. Since its discovery some years before 1873, P. quenstedtii has represented the 'prototype' of the turtle and has had an eventful scientific history. It was found in Neuenhaus (Häfner-Neuhausen in Schönbuch forest), Baden-Württemberg, Germany, and stems from Löwenstein-Formation (Weißer Keupersandstein), Late Triassic. The current catalogue number is GPIT-PV-30000. The specimen is listed in the historical inventory “Tübinger Petrefaktenverzeichnis 1841 bis 1896, [folio 326v.]“, as “[catalogue number: PV]16549, Schildkröte Weiser Keupersandstein Hafnerhausen” [turtle from White Keuper Sandstone]. Another, more recent synonym is “GPIT/RE/9396”. The same specimen was presented as uncatalogued by Gaffney (1990). Here we provide a surface scan of the steinkern for easier access of this famous specimen to the scientific community.
  

Proganochelys quenstedtii GPIT-PV-30000 View specimen

M3#967 This the surface model of the steinkern of the shell of Proganochelys quenstedtii. Type: "3D_surfaces" doi: 10.18563/m3.sf.967   state:published

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This contribution contains the 3D model of an endocranial cast analyzed in “A 10 ka intentionally deformed human skull from Northeast Asia”. There are many studies on the morphological characteristics of intentional cranial deformation (ICD), but few related 3D models were published. Here, we present the surface model of an intentionally deformed 10 ka human cranium for further research on ICD practice. The 3D model of the endocranial cast of this ICD cranium was discovered near Harbin City, Province Heilongjiang, Northeast China. The fossil preserved only the frontal, parietal, and occipital bones. To complete the endocast model of the specimen, we printed a 3D model and used modeling clay to reconstruct the missing part based on the general form of the modern human endocast morphology.
  

Homo sapiens IVPP-PA1616 View specimen

	M3#972 The frontal region of the endocast is flattened, probably formed by the constant pressure on the frontal bone during growth. There is a well-developed frontal crest on the endocranial surface. The endocast widens posteriorly from the frontal lobe. The widest point of the endocast is at the lateral border of the parietal lobe. The lower parietal areas display a marked lateral expansion. The overall shape of the endocast is asymmetrical, with the left side of the parietal lobe being more laterally expanded than the right side. Like the frontal lobe, the occipital lobe is also anteroposteriorly flattened. Type: "3D_surfaces" doi: 10.18563/m3.sf.972   state:published	Download 3D surface file
	M3#976 The original endocranial cast model (with texture) of IVPP-PA1616. It shows the original structures of the specimen, and was not altered in any way. Type: "3D_surfaces" doi: 10.18563/m3.sf.976   state:published	Download 3D surface file

This contribution contains the 3D model(s) described and figured in the following publication: Carolina A. Hoffmann, P. G. Rodrigues, M. B. Soares & M. B. Andrade. 2021. Brain endocast of two non-mammaliaform cynodonts from southern Brazil: an ontogenetic and evolutionary approach, Historical Biology, 33:8, 1196-1207, https://doi.org/10.1080/08912963.2019.1685512 

Probelesodon kitchingi MCP 1600 PV View specimen

M3#978 3D model of the brain endocast of Probelesodon kitchingi. Type: "3D_surfaces" doi: 10.18563/m3.sf.978   state:published

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Massetognathus ochagaviae MCP 3871 PV View specimen

M3#979 3D model of the brain endocast of Massetognathus ochagaviae. Type: "3D_surfaces" doi: 10.18563/m3.sf.979   state:published

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The present 3D dataset contains the 3D models of the holotype of Proterochampsa nodosa that were built and analysed in “Redescription, taxonomic revaluation, and phylogenetic affinities of Proterochampsa nodosa (Archosauriformes: Proterochampsidae), early Late Triassic of Candelaria Sequence (Santa Maria Supersequence)”. 

Proterochampsa nodosa MCP 1694-PV View specimen

M3#974 3D models of Proterochampsa nodosa. Model 1: skull. Model 2: mandible. Model 3: left mandibular ramus. Type: "3D_surfaces" doi: 10.18563/m3.sf.974   state:published

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