Dear Kitty. Some blog

This 1 July 2016 video from England says about itself:

New insights for the rudist phylogeny (Bivalvia, Hippuritida)

By Valentin Rineau.

Recorded at Progressive Palaeontology 2016, Oxford.

From the American Geophysical Union in the USA:

Ancient shell shows days were half-hour shorter 70 million years ago

Beer stein-shaped distant relative of modern clams captured snapshots of hot days in the late Cretaceous

March 9, 2020

Earth turned faster at the end of the time of the dinosaurs than it does today, rotating 372 times a year, compared to the current 365, according to a new study of fossil mollusk shells from the late Cretaceous. This means a day lasted only 23 and a half hours, according to the new study in AGU’s journal Paleoceanography and Paleoclimatology.

The ancient mollusk, from an extinct and wildly diverse group known as rudist clams, grew fast, laying down daily growth rings. The new…

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