418g,7.25"x3"x1.2" Fossils Orthoceras (straight horn) SQUID @Morocco, MF1569
Length: About 7.25" (End to End including rough part)
Width: About 3" (Widest Part)
Thickness: About 1.2" (Thickest Part)
Location of Origin: Atlas Mountains, Morocco
Age of Fossils: 240 Million - 500 Million Years Old or So
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Orthoceras ("straight horn") is a genus of extinct nautiloid cephalopod. This genus is sometimes called Orthoceratites. Note it is sometimes misspelled as Orthocera, Orthocerus or Orthoceros (Sweet 1964:K222).
Orthoceras fossils are common and have a global distribution, occurring in any marine rock, especially in limestone.
These are slender, elongate shells with the middle of the body chamber transversely constricted, and a subcentral orthochoanitic siphuncle. The surface is ornamented by a network of fine lirae (Sweet 1964:K224). Many other very similar species are included under the genus Michelinoceras.