''Phragmoteuthis'' is a genus of extinct

coleoid Subclass Coleoidea, or Dibranchiata, is the grouping of cephalopods containing all the various taxa popularly thought of as "soft-bodied" or "shell-less" (i.e., octopuses, squid and cuttlefish). Unlike its extant sister group, Nautiloidea, whose ...

cephalopod known from the late

Triassic The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 ...

to the lower

Jurassic The Jurassic ( ) is a geologic period and 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 Jurassic constitutes the middle period of ...

. 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 ''Clarkeiteuthis'' is a genus of extinct belemnoid cephalopod known from the lower Jurassic in Germany and England. Described two species, ''C. conocauda'' and ''C. montefiorei'' are originally described as species of phragmoteuthid '' Phragmot ...

''.

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