#Kurtosis was an important #parameter differentiating #size distributions, with #platykurtic distributions in #marls and #leptokurtic distributions in #limestones, suggesting that this parameter may reflect different degrees of #time #averaging. Most size #distributions were positively #skewed, but most strongly in marls. Complete #sampling led to #skewness values close to zero (#symmetrical distributions) and high kurtosis.

https://doi.org/10.2110/palo.2021.063

LITHOLOGY CONTROLS AMMONOID SIZE DISTRIBUTIONS | PALAIOS | GeoScienceWorld

The #effects are then compared with effects on #mean #sizes. In all #analyses, #lithology was the #dominant effect, with sizes #greater by 59% in #marls and by 33% in #limestones, as compared to #black #shales. The effect of complete #sampling style was a #decrease in size by 11%.

https://doi.org/10.2110/palo.2021.063

LITHOLOGY CONTROLS AMMONOID SIZE DISTRIBUTIONS | PALAIOS | GeoScienceWorld