Specifications
Description
Locality: Hamar Laghdad, Morocco
Genus: Schizophoria
Era: Early to Middle Devonian (likely Emsian–Eifelian)
Geological Age: about 408–388 million years ago
Formation: likely Kess-Kess Formation (Early Devonian mud mounds, Hamar Laghdad)
Description: Hamar Laghdad is a ridge in Morocco's eastern Anti-Atlas known for the Kess-Kess, rows of cone-shaped Early Devonian mud mounds. The mounds grew on the sea floor above an old submarine volcanic high, where faults carried warm fluids up to the sea floor.
Venting came and went over millions of years, from the late Emsian into the early Frasnian, with most mound growth in the Emsian. Brachiopods thrived here. Researchers have described distinct brachiopod communities living between the mounds and inside cavities within them.
Brachiopods look like clams but are a separate group of animals. They were among the most common shelled creatures in Devonian seas.
On these fossils much of the outer shell has worn away, showing the muscle scars on the surface.
Approximate size of 1 piece: 44mm x 39mm x 29mm
Approximate weight of 1 piece: 67g
Quantity: 1pc
We do our best to buy quality products- although not every rock is the same. If you choose to purchase the "staff pick option", we will select the best of the batch for you. Otherwise, it will be at random from the larger batch we have in stock.