Belemnotheutis
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Belemnotheutis is an extinct coleoid cephalopod genus from the middle and upper Jurassic, related to but morphologically distinct from belemnites. Belemnotheutis fossils are some of the best preserved
Two drawings of Belemnotheutis phragmocones by Gideon Mantell.
Reconstruction of Belemnotheutis in life
Left and Center: erroneous reconstructions by Richard Owen. Right: a restoration by Joseph Pearce, the original discoverer of Belemnotheutis. It is also the illustration copied in 2008 using ~150 million year old ink recovered from the fossilized ink sac of Belemnotheutis antiquus.
Squid
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A squid is a mollusc with an elongated soft body, large eyes, eight arms, and two tentacles in the orders Myopsida, Oegopsida, and Bathyteuthida. Like all other cephalopods, squid have a distinct head
Fossil Rhomboteuthis from the Lower Callovian (c. 164 Mya, middle Jurassic) of La Voulte-sur-Rhône, France
Fossil Plesioteuthis from the Tithonian (c. 150 Mya, upper Jurassic), Solnhofen, Germany
Basic squid features (ventral aspect)