Plants Angiosperms Name Novelty Status Authors Age Unit Location Synonymized taxa Notes ImagesAcer aequidentatumsp novvalidLesquereuxEoceneYpresianIone FormationA maple species.Acer bolanderisp novvalidLesquereuxEoceneYpresianIone FormationA maple species.Aralia angustilobasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a spikenard species.Moved to Platanophyllum angustiloba in 1941. Moved to Macginitiea angustiloba in 1986.Aralia whitneyisp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a spikenard species.Moved to Platanophyllum whitneyi in 1941. Moved to Macginitiea whitneyi in 1986.Betula aequalissp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a birch relative.Moved to Acalypha aequalis in 1941.Castanopsis chrysophylloidessp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as an chinquapin species.Moved to Tabernaemontana chrysophylloides in 1941.Cercocarpus antiquussp novvalidLesquereuxEoceneYpresianIone FormationA mountain mahogany species.Cornus kelloggiisp novvalidLesquereuxEoceneYpresianIone FormationA dogwood species.Cornus ovalissp novvalidLesquereuxEoceneYpresianIone FormationA dogwood species.Fagus pseudoferrugineasp novvalidLesquereuxEoceneYpresianIone FormationA beech tree species.Ficus microphyllasp novjr homonymLesquereuxEoceneYpresianIone FormationA fig species.A jr homonym of Ficus microphylla Moved to replacement name Ficus mensae in 1910.Ficus sordidasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a fig species.Moved to Phytocrene sordida in 1941.Ilex prunifoliasp novvalidLesquereuxEoceneYpresianIone FormationA holly species.Juglans californicasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a walnut species.A jr homonym of Juglans californica Moved to Juglans leonis in 1908.Moved to Canarium leonis in 1952.Juglans egregiasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a walnut species.Moved to Carya egregia in 1936. Moved to Gordonia egregia in 1941.Juglans laurineasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a walnut species.Moved to Phyllites laurineus in 1941. Moved to Sageretia laurinea in 1977.Juglans oregonianasp novvalidLesquereuxEocene?Mascall FormationA walnut species.Liquidambar californicasp novvalidLesquereuxEoceneYpresianIone FormationA sweet gum species.Magnolia californicasp novvalidLesquereuxEoceneYpresianIone FormationA Magnolia species.Magnolia lanceolatasp novjr homonymLesquereuxEoceneYpresianIone FormationA Magnolia species.A jr homonym of Magnolia lanceolata Moved to replacement name Magnolia dayana in 1910.Persea pseudocarolinensissp novvalidLesquereuxEoceneYpresianIone FormationAn avacado species.Platanus appendiculatasp novvalidLesquereuxEoceneYpresianIone FormationA sycamore species.Platanus dissectasp novvalidLesquereuxEoceneYpresianIone FormationA sycamore species.Quercus bowenianasp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus convexasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as an oak species.Moved to Castanopsis convexa in 1935. Moved to Chrysolepis convexa in 1985.Quercus distinctasp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus elaenoidessp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as an oak species.Moved to Nyssa elaenoides in 1944.Quercus goeppertiisp novjr homonymLesquereuxEoceneYpresianIone FormationFirst described as an oak species.A jr homonym of Quercus goeppertii Moved to replacement name Alnus operia in 1941.Quercus nevadensissp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus pseudochrysophyllasp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus pseudolyratasp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus transgressussp novvalidLesquereuxEoceneYpresianIone FormationAn oak species.Quercus voyanasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as an oak species.Moved to Hamamelites voyana in 1941.Rhus bowenianasp novvalidLesquereuxEoceneYpresianIone FormationA sumac relative.Rhus dispersasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a sumac species.Moved to Quercus dispersa in 1939.Rhus metopioidessp novjr homonymLesquereuxEoceneYpresianIone FormationA sumac relative.A jr homonym of Rhus metopioides Moved to replacement name Rhus mensae in 1941.Rhus mixtasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a sumac species.Moved to Koelreuteria mixta in 1946.Rhus myricaefoliasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a sumac species.Moved to Thouinopsis myricaefolia in 1941.Rhus typhinoidessp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a sumac species.Moved to Carya typhinoides in 1944.Sabalites californicussp novvalidLesquereuxEoceneYpresianIone FormationA palm relative.Salix californicasp novvalidLesquereuxEoceneYpresianIone FormationA willow species.Salix ellipticasp novjr homonymLesquereuxEoceneYpresianIone FormationFirst described as a willow species.A jr homonym of Salix elliptica Moved to replacement name Salix merriamii in 1908.Ulmus affinissp novjr homonymLesquereuxEoceneYpresianIone FormationAn elm species.A jr homonym of Ulmus affinis Ulmus californicasp novvalidLesquereuxEoceneYpresianIone FormationAn elm species.Ulmus pseudofulvasp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as an elm species.Moved to Chaetoptelea pseudofulva in 1941.Zanthoxylum diversifoliumsp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a Sichuan pepper species.Moved to Fagara diversifolia in 1908. Zizyphus microphyllussp novjr synonymLesquereuxEoceneYpresianIone FormationA jujube species.A jr homonym of Zizyphus microphyllus Synonymized into Cercidiphyllum piperoides in 1952.Ziziphus piperoidessp novjr synonymLesquereuxEoceneYpresianIone FormationFirst described as a jujube species.Moved to Cercidiphyllum piperoides in 1952.Moved to Tetracentron piperoides in 1977
Arthropods Newly named arachnids Name Novelty Status Authors Age Unit Location Notes ImagesAranea columbiaeSp novjr synonymScudder?YpresianQuesnel?Fraser FormationAn orb-web spider egg sack ichnogenus. moved to Araneaovoius columbiae (2011).
Newly named insects Name Novelty Status Authors Age Unit Location Notes ImagesBothromicromusGen et Sp novvalidScudder?YpresianQuesnel?Fraser FormationA possibly megalomine hemerobiid lacewing.Type species B. lachlaniEuschistus antiquusSp novjr synonymScudder?YpresianQuesnel?Fraser FormationA shield bugmoved to Teleoschistus antiquus (1890).HolcorpaGen et sp novvalidScudderEocenePriabonianFlorissant FormationA holcorpid scorpionfly The type species is H. maculosa.Lachnus quesneliSp novjr synonymScudder?YpresianQuesnel?Fraser FormationAn aphidoid of uncertain placement Moved to Sbenaphis quesneli (1890).Sciara deperditaSp novvalidScudder?YpresianQuesnel?Fraser FormationA sciarine dark-winged fungus gnat.
Archosauromorphs O. W. Lucas recovers more material which would be referred to Laelaps trihedrodon from Morrison Formation strata near Garden Park, Colorado."Introduction," Chure (2001) page 11.
Newly named pseudosuchians Name Novelty Status Authors Age Unit Location Notes Images Symphyrophus Nomen dubiumCopeLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationPossible synonym of Amphicotylus.Osborn, H.F., and Mook, C. C. (1921). "Camarasaurus, Amphicoelias and other sauropods of Cope." Memoirs of the American Museum of Natural History NS, 3(3): 249–387.
Newly named dinosaurs Name Novelty Status Authors Age Unit Location Notes Images Amphicoelias fragillimus Sp novJr. synonymMarshLate Jurassic (Tithonian)UnknownMoved to Maraapunisaurus fragillimus (2018).BrachyrophusGen nov jr synonym CopeLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationJunior synonym of Camptosaurus. Creosaurus Gen nov Junior synonymMarshLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationSynonym of Allosaurus fragilis. DiplodocusGen et sp nov ValidMarshLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationA diplodocine diplodocid.Type species D. longus EpanteriasGen et sp nov Nomen dubiumCopeLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationAn allosaurid theropod.Possibly a synonym of Allosaurus. Type species E. amplexus HypsirhophusGen et sp nov Nomen dubiumCopeLate Jurassic (Kimmeridgian to Tithonian)Morrison Formationpossibly a synonym of Stegosaurus. Type species H. discurus LaosaurusGen et sp nov Nomen dubiumMarshLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationA dubious Neornithischian of uncertain placement. MorosaurusGen et sp nov Jr. synonymMarshLate Jurassic (Kimmeridgian to Tithonian)Morrison FormationJunior synonym of Camarasaurus. Type species M. grandis
Plesiosaurs
Newly named plesiosaurs Name Novelty Status Authors Age Unit Location Notes Images EurysaurusGen et sp nov Valid GaudryEarly JurassicUnknownA possible pliosauroidType species E. raincourti
Synapsids
Non-mammalian
Name Status Authors Discovery year Age Unit Location Notes ImagesDimetrodonValidEmbolophorusValidOphiacodonValidSphenacodonValidTheropleuraValid
Footnotes
References