Results 161 to 170 of about 8,458 (202)

Lithium isotopic evidence for enhanced reverse weathering during the Early Triassic warm period. [PDF]

open access: yesProc Natl Acad Sci U S A
Rauzi S   +6 more
europepmc   +1 more source

The terrestrial end-Permian mass extinction in the paleotropics postdates the marine extinction. [PDF]

open access: yesSci Adv
Wu Q   +10 more
europepmc   +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.   +4 more
openaire   +2 more sources

Conodonter

Varv, 1992
Intet ...
Rasmussen, J.A., Stouge, S.
openaire   +1 more source

The conodont controversies

Trends in Ecology & Evolution, 1996
The discovery of fossilized conodont soft tissues has led to suggestions that these enigmatic animals were among the earliest vertebrates and that they were macrophagous, using their oropharyngeal skeletal apparatus to capture and process prey. These conclusions have proved controversial.
Aldridge, RJ, Purnell, MA
openaire   +3 more sources

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