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This is 1 of 33 approved meteorites classified as Angrite
"A partial skeleton of the basal mosasaur Halisaurus platyspondylus from the Severn Formation (Upper Cretaceous: Maastrichtian) of Maryland" (PDF)
and two anterior oblique ridges
Ellipsotaphrus
Great collection of 15 specimens of this middle Devonian trilobite species
30518 - Beautiful 2.12 Inch Walliserops trifurcatus Middle Devonian Trilobite Spinosaur Bones This is 1 of 33This species of trilobite is very rare, with an almost extraterrestrial aspect. The trident shaped appendage has been considered in functional morphology as a sensitive functionality to find food between the seabed substrate. Walliserops trifurcatus, Morzadec 2001 Belongs to Walliserops according to Morzadec 2001 Sister taxa: Walliserops hammii, Walliserops lindoei, Walliserops tridens Age range: 402. 5 to 391. 9 Ma Distribution: found only at Zguilma
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