''Phragmoteuthis'' is a genus of extinct coleoid

cephalopod A cephalopod is any member of the molluscan class Cephalopoda ( Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, ...

known from the late

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...

to the lower

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

. Its soft tissue has been preserved; some specimens contain intact

ink sac An ink sac is an anatomical feature that is found in many cephalopod mollusks used to produce the defensive cephalopod ink. With the exception of nocturnal and very deep water cephalopods, all Coleoidea (squid, octopus and cuttlefish) which dwell ...

s, and others, gills. It had an internal phragmocone and unknown numbers of arms. Previously described species, ''P. conocauda'' and ''P. montefiorei'' got their own genus, '' Clarkeiteuthis''.

References

Belemnoidea Jurassic cephalopods Triassic cephalopods Mesozoic cephalopods of Europe Prehistoric life of Europe Late Triassic first appearances Early Jurassic extinctions Prehistoric cephalopod genera {{paleo-cephalopod-stub