graptiloid – Matty's Paradigm

August 5, 2020August 5, 2022

Graptiloids, Nautiloids, Cystoids in Maximum Abundance

If a sedimentary rock is full of the remains of Graptiloids does it means that the Graptiloids were in their maximum abundance? No, it means that the place where the Graptiloids lived got buried in sediment.

August 5, 2018August 5, 2025

August 5th

The Ordovician is supposedly period of time but the description that we have sounds suspiciously like the fauna of a marine habitat. The Cambrian is the sea floor, the Ordovician is the open ocean immediately above it.