Remarkable preservation of undigested muscle tissue within a Late Cretaceous tyrannosaurid coprolite from Alberta, Canada [0.03%]
加拿大阿尔伯塔晚白垩世霸王龙粪便中未消化肌肉组织的惊人保存状态
Karen Chin,David A Eberth,Mary H Schweitzer et al.
Karen Chin et al.
Exceptionally detailed soft tissues have been identified within the fossilized feces of a large Cretaceous tyrannosaurid. Microscopic cord-like structures in the coprolitic ground mass are visible in thin section and with scanning electron ...
High-resolution correlation in apparently monotonous rocks: upper Ordovician Kope Formation, Cincinnati Arch [0.03%]
单调地层中的高分辨率相关性研究——以辛辛那提盆地奥陶系上科伯峰段为例
S M Holland,D L Meyer,A I Miller
S M Holland
Short stratigraphic sections in apparently monotonous strata pose several challenges to high-resolution (
S L Cady
S L Cady
Anomalous carbonate precipitates: is the Precambrian the key to the Permian? [0.03%]
异常碳酸盐沉淀：前寒武纪是关键吗？
J P Grotzinger,A H Knoll
J P Grotzinger
Late Permian reefs of the Capitan complex, west Texas; the Magnesian Limestone, England; Chuenmuping reef, south China; and elsewhere contain anomalously large volumes of aragonite and calcite marine cements and sea-floor crusts, as well as...
Lithofacies and biofacies of mid-Paleozoic thermal spring deposits in the Drummond Basin, Queensland, Australia [0.03%]
澳大利亚东隆盆地中古生代热水沉积岩相和生物相研究
M R Walter,D Desmarais,J D Farmer et al.
M R Walter et al.
The Devonian to Carboniferous sinters of the Drummond Basin, Australia, are among the oldest well established examples of fossil subaerial hot springs. Numerous subaerial and subaqueous spring deposits are known from the geological record a...
Secular change in chert distribution: a reflection of evolving biological participation in the silica cycle [0.03%]
硅质岩分布的非周期性变化：生物在硅循环中作用进化的反映
R G Maliva,A H Knoll,R Siever
R G Maliva
In the modern oceans, the removal of dissolved silica from sea water is principally a biological process carried out by diatoms, with lesser contributions from radiolaria, silicoflagellates, and sponges. Because such silica in sediments is ...
Calcified microbes in Neoproterozoic carbonates: implications for our understanding of the Proterozoic/Cambrian transition [0.03%]
新元古代碳酸盐岩中的钙化微生物：对认识前寒武纪/寒武纪转折期的影响
A H Knoll,I J Fairchild,K Swett
A H Knoll
Tidal flat and lagoonal dolostones of the Neoproterozoic Draken Formation, Spitsbergen, exhibit excellent preservation of carbonate fabrics, including heavily calcified microfossils. The crust-forming cyanobacterium Polybessurus is preserve...
J W Valentine,B H Tiffney,J J Sepkoski Jr
J W Valentine
Patterns of longevity and rate of appearance of taxa in the fossil record indicate a different evolutionary dynamic between land plants and marine invertebrates. Among marine invertebrates, rates of taxonomic turnover declined through the P...
Review
Palaios. 1991:6:81-8. DOI: 1991