Gemuendina stuertzi, ray-like Placoderm Stegosaurus

Gemuendina stuertzi, ray-like Placoderm StegosaurusGemuendina stuertzi is a placoderm of the order Rhenanida, of the seas of Early Devonian Germany. In life, Gemuendina resembled a scaly ray with an upturned head, or a large finned stargazer. G. stuertzi is often invoked as an example of convergent evolution with its flat body and huge, wing like pectoral fins it has a strong, albeit superficial similarity to rays. Unlike rays, however, both Gemuendina`s eyes and nostrils were placed atop the head,

Beaufort Series

9---Mixopterus

The find consisted of upper and lower teeth belonging to a single individual specimen with the largest tooth reaching 6 inches in length

The white circle on the image at right shows the region of the eggs

so it may represent an entirely new kind of dinosaur

the subject of this paper

and few museum replicas are more beautiful or intriguing than the Berlin specimen of Archaeopteryx

All Arthropods have a chitinous exoskeleton and jointed limbs

000 pounds

Time period: Throughout the Pleistocene

the shell consisted of a series of chambers

About 125 million years ago