Results 161 to 170 of about 5,019 (222)

Reconstruction of Phanerozoic climate using carbonate clumped isotopes and implications for the oxygen isotopic composition of seawater. [PDF]

Proc Natl Acad Sci U S A
Thiagarajan N, Lepland A, Ryb U, Torsvik TH, Ainsaar L, Hints O, Eiler J.   +6 more
europepmc   +1 more source

Lower Triassic beds from Tehovec (Polhov Gradec Hills, Slovenian)

Geologija, 1998
Bogdan Jurkovšek, Bojan Ogorelec, Tea Kolar-Jurkovšek   +2 more
doaj  

Morphogenesis of pteraspid heterostracan oral plates and the evolutionary origin of teeth. [PDF]

R Soc Open Sci
Grohganz M, Johanson Z, Keating JN, Donoghue PCJ.   +3 more
europepmc   +1 more source

Carboniferous conodonts from a limestone pebble of the Lower Permian quartz conglomerate near Lenart at Luša, W Slovenia

Geologija, 2001
Anton Ramovš
doaj  

Finite element and microstructural analyses indicate that pteraspid heterostracan oral plate microstructure was adapted to a mechanical function. [PDF]

Palaeontology
Grohganz M, Ballell A, Rayfield EJ, Ferron HG, Johanson Z, Donoghue PCJ.   +5 more
europepmc   +1 more source

Uncertainty in the timing of diversification of flowering plants rests with equivocal interpretation of their fossil record. [PDF]

R Soc Open Sci
Clark JW, Donoghue PCJ.
europepmc   +1 more source

Reconstruction of feeding behaviour and diet in Devonian ctenacanth chondrichthyans using dental microwear texture and finite element analyses. [PDF]

R Soc Open Sci
Greif M, Calandra I, Lautenschlager S, Kaiser TM, Mezane M, Klug C.   +5 more
europepmc   +1 more source

Treatise on Invertebrate Paleontology, Part W, conodonts, conoidal shells, worms, trace fossils: comments and additions

, 1966
Frank H. T. Rhodes, Walter Häntzschel, Klaus J. Müller, Donald Fisher, Curt Teichert   +4 more
openalex   +1 more source

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Conodont Pearls?

Science, 1976
Conodonts are zoologically enigmatic, toothlike phosphatic microfossils occurring in marine sedimentary rocks ranging in age from Cambrian to Triassic. Dimpled spheres of less than 1 millimeter in diameter are sporadic associates of conodonts and have identical chemical composition and microstructure.
B F, Glenister, G, Klapper, K M, Chauff
openaire   +2 more sources

ʻConodont pearlsʼ do not belong to conodonts

Lethaia, 2021
We investigated the mineralogical and chemical signatures of enigmatic microspherules commonly recovered in conodont residues and referred to in literature as 'conodont pearls.' Comparison between these 'pearls,' associated conodonts and other phosphatic skeletal elements present in the same stratigraphical level was run in an effort to reveal any ...
Ferretti A., Malferrari D., Savioli M., Siepe T., Medici L.   +4 more
openaire   +2 more sources