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Journal Article
Published: 01 March 2025
American Mineralogist (2025) 110 (3): 408–413.
... near that of fluoridated human teeth. The first F substituent in hydroxylapatite, near fluoridated dental enamel compositions, is dramatically underbonded by the surrounding Ca2 atoms (0.72 v.u.) in a hydroxylapatite matrix. However, the hydroxyl hydrogen can contribute 0.20 or 0.10 v.u. in hydrogen...
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First thumbnail for: Structural variations along the apatite F-OH join:...
Second thumbnail for: Structural variations along the apatite F-OH join:...
Third thumbnail for: Structural variations along the apatite F-OH join:...
Journal Article
Published: 01 November 2024
Earth Sciences History (2024) 43 (2): 207–221.
...Toshihiro Yamada ABSTRACT It is well known that fossils of shark’s teeth were named as ‘tongue stones’ ( glossopetrae in Latin) because of their similarity in shape to the tongues of animals. However, Nicolaus Steno (1638–1686) decidedly revised this kind of explanation in the latter half...
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First thumbnail for: BORROWED ILLUSTRATIONS OF GLOSSOPETRAE WITH SHARK’...
Second thumbnail for: BORROWED ILLUSTRATIONS OF GLOSSOPETRAE WITH SHARK’...
Third thumbnail for: BORROWED ILLUSTRATIONS OF GLOSSOPETRAE WITH SHARK’...
Journal Article
Journal: PALAIOS
Published: 17 August 2024
PALAIOS (2024) 39 (8): 243–263.
... deposits and thus carry a legacy from those initial depositional conditions, before becoming subject to subaerial conditions. A total of 13 bone fragments was analyzed, predominately specimens of the whales Basilosaurus isis and Dorudon atrox along with shark teeth and sirenian (sea cow) bones...
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First thumbnail for: VERTEBRATE FOSSIL PERMINERALIZATION IN A SEQUENCE ...
Second thumbnail for: VERTEBRATE FOSSIL PERMINERALIZATION IN A SEQUENCE ...
Third thumbnail for: VERTEBRATE FOSSIL PERMINERALIZATION IN A SEQUENCE ...
Journal Article
Journal: Paleobiology
Published: 01 August 2024
Paleobiology (2024) 50 (3): 452–461.
... high from the Oligocene onward. Subsequent tests in extant carnivorans reveal taxa with more bladelike teeth are prevalent in more open environments. Our results reveal an unexpected functional shift among North American predators in response to large-scale environmental changes across the Cenozoic...
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First thumbnail for: Cenozoic climate change and the evolution of North...
Second thumbnail for: Cenozoic climate change and the evolution of North...
Third thumbnail for: Cenozoic climate change and the evolution of North...
Journal Article
Published: 01 June 2024
Italian Journal of Geosciences (2024) 143 (2): 237–256.
... ), after receiving reports of large buried bones near Canstadt, funded six months of excavation to recover over “ sixty ivory tusks, that is the characteristic remains of more than thirty elephants, some of which were ten feet in length ”. Additionally, numerous teeth and bones of “ other large quadrupeds...
FIGURES
First thumbnail for: The abbot Alberto Fortis and the elephant bones fr...
Second thumbnail for: The abbot Alberto Fortis and the elephant bones fr...
Third thumbnail for: The abbot Alberto Fortis and the elephant bones fr...
Journal Article
Journal: Geology
Published: 23 May 2024
Geology (2024) 52 (8): 620–624.
...Wei Shu; Christophe Colin; Zhifei Liu; Arnaud Dapoigny Abstract A long-term neodymium isotope (ε Nd ) record of fossil fish teeth was investigated to constrain the evolution of deep-water circulation in the abyssal South China Sea (SCS) during the late Oligocene–Miocene (27–10 Ma). Fish teeth...
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First thumbnail for: Late Oligocene–Miocene evolution of deep-water cir...
Second thumbnail for: Late Oligocene–Miocene evolution of deep-water cir...
Third thumbnail for: Late Oligocene–Miocene evolution of deep-water cir...
Journal Article
Published: 02 May 2024
Canadian Journal of Earth Sciences (2024) 61 (8): 843–854.
... of sampling. We could not include mastodons ( Mammut sp . ), in our study, due to sampling access. Mastodons are worth mentioning as two reported teeth exist on Vancouver Island ( Harington 1975 ; Keddie 2016 b ), and they are often discussed alongside mammoths given their ordinal relationship...
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First thumbnail for: Survival of mammoths ( Mammuthus sp.) into the Lat...
Second thumbnail for: Survival of mammoths ( Mammuthus sp.) into the Lat...
Journal Article
Journal: Paleobiology
Published: 01 May 2024
Paleobiology (2024) 50 (2): 346–363.
... the terms of the Creative Commons Attribution licence ( http://creativecommons.org/licenses/by/4.0/ ), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited. Complex enamel ridges have evolved multiple times on the teeth of unrelated...
FIGURES
First thumbnail for: The impact of apicobasal ridges on dental load-bea...
Second thumbnail for: The impact of apicobasal ridges on dental load-bea...
Third thumbnail for: The impact of apicobasal ridges on dental load-bea...
Journal Article
Journal: Paleobiology
Published: 01 May 2024
Paleobiology (2024) 50 (2): 364–375.
... America, including the four widespread and two endemic species. All of these Hh4 equid species were hypsodont ( Fig. 3 ), that is, having high-crowned teeth with relatively flat occlusal surfaces adapted for crushing and grinding more abrasive vegetation such as grasses. These equids display...
FIGURES
First thumbnail for: Species occurrences of Mio-Pliocene horses (Equida...
Second thumbnail for: Species occurrences of Mio-Pliocene horses (Equida...
Third thumbnail for: Species occurrences of Mio-Pliocene horses (Equida...
Journal Article
Journal: Paleobiology
Published: 01 February 2024
Paleobiology (2024) 50 (1): 17–28.
FIGURES
First thumbnail for: Sorting of persistent morphological polymorphisms ...
Second thumbnail for: Sorting of persistent morphological polymorphisms ...
Third thumbnail for: Sorting of persistent morphological polymorphisms ...
Journal Article
Published: 01 January 2024
Journal of Paleontology (2024) 98 (1): 128–151.
... of these two elements coincides with Desmanella , their position along the dental row cannot be fully confirmed. Nevertheless, a clear similarity is found with the deciduous teeth attributed to D. engesseri by Klietmann et al. ( 2015 ). Finds of milk teeth attributed to Desmanella are exceedingly rare...
FIGURES
First thumbnail for: The Late Miocene Talpidae (Eulipotyphla, Mammalia)...
Second thumbnail for: The Late Miocene Talpidae (Eulipotyphla, Mammalia)...
Third thumbnail for: The Late Miocene Talpidae (Eulipotyphla, Mammalia)...
Journal Article
Published: 01 November 2023
Journal of Paleontology (2023) 97 (6): 1282–1292.
... of isolated teeth and fragmentary jaws. Fortunately, the p4 of multituberculates is the most common form of remains for this group and is a principal source of diagnostic characters in systematic studies, the p4 of cimolodontan multituberculates is both common and a source of diagnostic characters...
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First thumbnail for: Species discrimination in the multituberculate Mes...
Second thumbnail for: Species discrimination in the multituberculate Mes...
Third thumbnail for: Species discrimination in the multituberculate Mes...
Journal Article
Published: 01 September 2023
Journal of Paleontology (2023) 97 (5): 1133–1146.
... is confined to meadow biotopes in southeastern West Siberia, part of the Altai Mountains, and northeastern Kazakhstan (Galkina et al., 1969 ; Galkina and Nadeev, 1980 ; Makhmutov, 1983 ). The molars of modern species of the zokor subfamily can be characterized as euhypsodont (continuously growing teeth...
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First thumbnail for: Characterization of the West Siberian lineage of z...
Second thumbnail for: Characterization of the West Siberian lineage of z...
Third thumbnail for: Characterization of the West Siberian lineage of z...
Journal Article
Journal: Paleobiology
Published: 01 August 2023
Paleobiology (2023) 49 (3): 563–577.
.... This involved powdering of previously analyzed teeth to perform comparisons of pretreated versus untreated samples, with parallel comparisons to Fourier transform infrared (FTIR) spectroscopy of each sample, following the approach of Webb et al. ( 2014 ). Stable carbon isotope compositions, crystallinity...
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First thumbnail for: Anomalous 13 C enrichment in Mesozoic vertebrate e...
Second thumbnail for: Anomalous 13 C enrichment in Mesozoic vertebrate e...
Journal Article
Published: 01 July 2023
Journal of Paleontology (2023) 97 (4): 777–798.
... De Bruijn et al., 2006 . See Van den Hoek Ostende ( 2001 , p. 686). * Corresponding author. The material described here comprises 264 isolated teeth of Erinaceidae and 110 isolated teeth of Dimylidae. For Erinaceidae, we mostly follow the measurement methods of Prieto and Rummel...
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First thumbnail for: The late Miocene Erinaceidae and Dimylidae (Eulipo...
Second thumbnail for: The late Miocene Erinaceidae and Dimylidae (Eulipo...
Third thumbnail for: The late Miocene Erinaceidae and Dimylidae (Eulipo...
Journal Article
Published: 01 June 2023
Rocky Mountain Geology (2023) 58 (1): 1–17.
... in a gray mudstone that is mantled by a mollusk-dominated coquina that bears conodonts, palaeoniscoid scales, and actinopterygian teeth. In contrast, most studied samples are dominated by wood fragments, charcoal, cuticles, and unidentified phytoclasts—all interpreted to represent dispersed plant cuticle...
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First thumbnail for: Palynology of Permian red-bed successions of Color...
Second thumbnail for: Palynology of Permian red-bed successions of Color...
Third thumbnail for: Palynology of Permian red-bed successions of Color...
Journal Article
Published: 01 May 2023
Journal of Paleontology (2023) 97 (3): 735–753.
... (Marković et al., 2020 , p. 833): “The m3 and m2 are about equally long. The m1 is rounded anteriorly. Anteroconid blade-shaped with a small cusp. The posterior arm of the protoconid of the lower cheek teeth is usually long and may connect with the metaconid. The m1 and/or m2 of the Oligocene...
FIGURES
First thumbnail for: Two Asian cricetodontine-like muroid rodents from ...
Second thumbnail for: Two Asian cricetodontine-like muroid rodents from ...
Third thumbnail for: Two Asian cricetodontine-like muroid rodents from ...
Journal Article
Journal: Paleobiology
Published: 01 May 2023
Paleobiology (2023) 49 (2): 353–373.
... fish teeth. This shallower gradient implies that the latitudinal limits of the climate zones were shifted poleward in comparison with present-day zones, and according to Zhang et al. ( 2019 ), both of the sites analyzed in our study were located in the temperate climate zone. The paleolatitudes were...
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First thumbnail for: Latest Maastrichtian middle- and high-latitude mos...
Second thumbnail for: Latest Maastrichtian middle- and high-latitude mos...
Third thumbnail for: Latest Maastrichtian middle- and high-latitude mos...
Journal Article
Published: 01 March 2023
Journal of Paleontology (2023) 97 (2): 533–538.
FIGURES
First thumbnail for: † Estelestes ensis (Mammalia, Metatheria) from the...
Second thumbnail for: † Estelestes ensis (Mammalia, Metatheria) from the...
Third thumbnail for: † Estelestes ensis (Mammalia, Metatheria) from the...
Journal Article
Published: 01 March 2023
Journal of Paleontology (2023) 97 (2): 477–498.
... of Phenacolemur in retaining an ectocingulid on the molar trigonids. Diastema between the enlarged lower incisor and the cheek teeth absent, in contrast to Phenacolemur , Arcius , Acidomomys , and later-occurring species of Ignacius . C/c = upper/lower canine; I/I = upper/lower incisor; L...
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First thumbnail for: New paromomyids (Mammalia, Primates) from the Pale...
Second thumbnail for: New paromomyids (Mammalia, Primates) from the Pale...
Third thumbnail for: New paromomyids (Mammalia, Primates) from the Pale...