The Tarphycerida were the first of the coiled cephalopods, found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian.
They are found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian. The Tarphycerida were the first of the coiled cephalopods.
The Tarphycerida were the first of the coiled cephalopods. They are found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian.
The Tarphycerida were the first of the coiled cephalopods. They are found in marine sediments from the Lower Ordovician (middle and upper Canad) to the Middle Devonian.