Macrosemiidae
Introduction Fin shape diversity within Macrosemiiformes A. ''Propterus microstomus''; B. ''Notagogus denticulatus''; C. ''Legnonotus krambergeri''; D. ''Macrosemius rostratus''; E. ''Enchelyolepis andrewsi'' F. ''Enchelyolepis pectoralis'' G. ''Uarbryichthys latus'' H. ''Voelklichthys comitatus''. Pectoral fins are shown in yellow; pelvic fins in orange; dorsal fins in red; and anal fins in green. '''Macrosemiidae''' is an extinct family of ginglymodian fish. The family first appeared during the Middle Triassic and disappeared during the Late Cretaceous. The group has been found in rock formations in Africa, Australia, Eurasia and North America. As ginglymodians, their closest living relatives are gars, with them being typically placed as nested within the Semionotiformes. Many members of the family have elongated dorsal fins, often associated with adjacent area of skin which was free of scales. These fins were likely undulated for use in precision swimming. Their body morphology suggests that they were slow swimmers that were capable of maneuvering around complex topography, such as reef environments.
Taxonomy *†'''Order Macrosemiiformes'''**†'''Family Macrosemiidae''', Thiollière, 1858*** Genus †''Eosemionotus''*** Genus †''Aphanepygus'' *** Genus †''Disticholepis''*** Genus †''Enchelyolepis''*** Genus †''Orthurus''*** Genus †''Petalopteryx''*** Genus †''Neonotagogus''*** Genus †''Histionotus''*** Genus †''Legnonotus''*** Genus †''Macrosemius''*** Genus †''Propterus''**''Incetae sedis''*** Genus †''Uarbryichthys''*** Genus †''Voelklichthys''
Timeline of genera ImageSize  = width:1000px height:auto barincrement:15pxPlotArea   = left:10px bottom:50px top:10px right:10pxPeriod      = from:-251 till:-50TimeAxis    = orientation:horizontalScaleMajor  = unit:year increment:10 start:-251ScaleMinor  = unit:year increment:1 start:-251TimeAxis    = orientation:horAlignBars   = justifyColors = #legends  id:CAR	  value:claret  id:ANK 	 value:rgb(0.4,0.3,0.196)  id:HER	  value:teal  id:HAD	  value:green  id:OMN	  value:blue  id:black        value:black  id:white        value:white  id:mesozoic     value:rgb(0.54,0.54,0.258)  id:triassic     value:rgb(0.51,0.17,0.57)   id:earlytriassic     value:rgb(0.6,0.22,0.61)   id:middletriassic     value:rgb(0.73,0.53,0.71)   id:latetriassic     value:rgb(0.78,0.65,0.8)   id:jurassic     value:rgb(0.2,0.7,0.79)   id:earlyjurassic     value:rgb(0,0.69,0.89)   id:middlejurassic     value:rgb(0.52,0.81,0.91)   id:latejurassic     value:rgb(0.74,0.89,0.97)   id:cretaceous   value:rgb(0.5,0.78,0.31)  id:earlycretaceous   value:rgb(0.63,0.78,0.65)  id:latecretaceous   value:rgb(0.74,0.82,0.37) BarData= bar:eratop bar:space bar:periodtop bar:space bar:NAM1 bar:NAM2 bar:NAM3 bar:NAM4 bar:NAM5 bar:NAM6 bar:NAM7 bar:NAM8 bar:space bar:period bar:space bar:eraPlotData= align:center textcolor:black fontsize:M mark:(line,black) width:25  shift:(7,-4)   bar:periodtop from: -251   till:  -245    color:earlytriassic  text:Early from: -245   till:  -228    color:middletriassic  text:Middle  from: -228   till:  -199.6    color:latetriassic  text:Late             from: -199.6    till: -175.6    color:earlyjurassic    text:Early from: -175.6    till: -161.2    color:middlejurassic    text:Middle from: -161.2    till: -145.5    color:latejurassic    text:Late from: -145.5    till: -99.6    color:earlycretaceous    text:Early from: -99.6    till: -65.5    color:latecretaceous    text:Late bar:eratop from: -251   till:  -199.6    color:triassic  text:Triassic          from: -199.6    till: -145.5    color:jurassic    text:Jurassic from: -145.5    till: -65.5   color:cretaceous    text:CretaceousPlotData= align:left fontsize:M mark:(line,white) width:5 anchor:till align:left color:middletriassic bar:NAM1  from:	-237	till:	-149.03	text:	Ophiopsis color:latetriassic bar:NAM2  from:	-228.7	till:	-199.6	text:	Legnonotus color:latejurassic bar:NAM3  from:	-155.7	till:	-149.03	text:	Macrosemius color:latejurassic bar:NAM4  from:	-155.7	till:	-99.6	text:	Histionotus color:latejurassic bar:NAM5  from:	-150.8	till:	-65.5	text:	Propterus color:latejurassic bar:NAM6  from:	-150.8	till:	-65.5	text:	Notagogus color:latejurassic bar:NAM7  from:	-147.3	till:	-130	text:	Enchelyolepis color:earlycretaceous bar:NAM8  from:	-145.5	till:	-93.5	text:	PetalopteryxPlotData= align:center textcolor:black fontsize:M mark:(line,black) width:25 bar:period from: -251   till:  -245    color:earlytriassic  text:Early from: -245   till:  -228    color:middletriassic  text:Middle  from: -228   till:  -199.6    color:latetriassic  text:Late             from: -199.6    till: -175.6    color:earlyjurassic    text:Early from: -175.6    till: -161.2    color:middlejurassic    text:Middle from: -161.2    till: -145.5    color:latejurassic    text:Late from: -145.5    till: -99.6    color:earlycretaceous    text:Early from: -99.6    till: -65.5    color:latecretaceous    text:Late bar:era from: -251   till:  -199.6    color:triassic  text:Triassic          from: -199.6    till: -145.5    color:jurassic    text:Jurassic from: -145.5    till: -65.5   color:cretaceous    text:Cretaceous
References *