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  2. Belemnitida - Wikipedia

    en.wikipedia.org/wiki/Belemnitida

    Belemnitida (or belemnites) is an extinct order of squid-like cephalopods that existed from the Late Triassic to Late Cretaceous (And possibly the Eocene [4] [5]).Unlike squid, belemnites had an internal skeleton that made up the cone.

  3. National Register of Historic Places listings in Columbus, Ohio

    en.wikipedia.org/wiki/National_Register_of...

    Near Northside Historic District. June 4, 1980 Off State Route 315 ... Ohio Historical Center and Ohio Village. May 5, 2023 : 800 E. 17th Avenue No: 120 # Ohio ...

  4. Columbus Limestone - Wikipedia

    en.wikipedia.org/wiki/Columbus_Limestone

    2.2 Cephalopods. 2.3 Other Invertebrates. 2.4 Fish. 3 Age. 4 Economic Uses. 5 ... the fossils are almost free of deformation caused by tectonic activity common in the ...

  5. Evolution of cephalopods - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_cephalopods

    Fossil orthoconic nautiloid from the Ordovician of Kentucky; an internal mold showing siphuncle and half-filled camerae, both encrusted.. Understanding of early cephalopod origins is by necessity biased by the available fossil material, which on the whole consists of shelly fossils.

  6. Cephalopod beak - Wikipedia

    en.wikipedia.org/wiki/Cephalopod_beak

    The beak of a giant squid. All extant cephalopods have a two-part beak, or rostrum, situated in the buccal mass and surrounded by the muscular head appendages. The dorsal (upper) mandible fits into the ventral (lower) mandible and together they function in a scissor-like fashion. [1] [2] The beak may also be referred to as the mandibles or jaws ...

  7. What scientists learned from a well-preserved fossil of this ...

    www.aol.com/entertainment/scientists-learned...

    The discovery of a well-preserved fossil is helping researchers learn more about an iconic Jurassic-period species. The plesiosaur, considered a successful marine predatory ancient species, may ...

  8. Burning Tree Mastodon - Wikipedia

    en.wikipedia.org/wiki/Burning_Tree_Mastodon

    Its fossil remains are found from Alaska to Florida, but are most commonly encountered in eastern America. On average, the American mastodon was around 5 meters long, 3 meters tall at the shoulder, and weighed between 3,500 and 4,500 kilograms. Living mastodons were covered with coarse, brownish hair, unlike modern elephants.

  9. Belemnotheutis - Wikipedia

    en.wikipedia.org/wiki/Belemnotheutis

    Belemnotheutis existed during the late Middle Jurassic to the Upper Jurassic epoch, from the Callovian age (166.1 to 163.5 mya) to the Kimmeridgian age (157.3 to 152.1 mya). The belemnotheutid Acanthoteuthis, a close relative which is treated by some paleontologists as synonymous with Belemnotheutis, is known to have existed from as early as the Callovian age (166.1 to 163.5 mya) of the Middle ...