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Ohmdenosaurus lower leg bones
Ohmdenosaurus lower leg bones

Ohmdenosaurus is a genus of sauropod dinosaur that lived during the Early Jurassic epoch in what is now Germany. The only known specimen (pictured) – a tibia (shinbone) and ankle – was discovered in rocks of the Posidonia Shale near the village of Ohmden. The specimen is exhibited in a local museum, where, in the 1970s, the German palaeontologist Rupert Wild recognised it as the remains of a sauropod. One of the earliest known sauropods, Ohmdenosaurus was quadrupedal (four-legged) and already had the columnar limbs typical for the group. It was small for a sauropod, with an estimated length of 3 to 4 m (10 to 13 ft). Its relationships to other sauropods remain uncertain due to the incompleteness of its remains. The Posidonia Shale was deposited within a shallow inland sea. Ohmdenosaurus was a terrestrial animal, so the specimen must have been transported by predators or water currents at least 100 km (62 mi) from the shoreline to its site of burial. It is the only dinosaur fossil known from the shale. (Full article...)

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Elzear Horn's drawing of Baldwin V's tomb
Elzear Horn's drawing of Baldwin V's tomb

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The first computer mouse
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Hibiscus moscheutos

Hibiscus moscheutos, commonly known by various names including rose mallow and swamp rose-mallow, is a species of flowering plant in the family Malvaceae. It is a cold-hardy perennial wetland plant that can grow in large colonies. The hirsute leaves are of variable morphology, but are commonly deltoidal in shape with up to three lobes. It is found in wetlands and along the riverine systems of the eastern United States from Texas to the Atlantic states, its territory extending northward to southern Ontario, Canada. It is a tall plant, with a height of 1.5 to 2.5 meters (4.9 to 8.2 ft) and flowers up to 20 centimeters (7.9 in) across. Petal colors range from pure white through various pinks to red, and most have an eye of deep maroon. These pink H. moscheutos flowers were photographed in Point Pelee National Park in Ontario.

Photograph credit: The Cosmonaut

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