Ichnofossils
Genus

Taenidium Heer, 1877

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Taxon description

Díez-Canseco et al., 2016

Taenidium comprises unlined meniscate burrows. Taxonomy of meniscate trace fossils is based on their wall details and the presence or absence of branching (D’Alessandro and Bromley, 1987). Taenidium is distinguished from other meniscate ichnogenus, such as Beaconites Vialov, 1962, Scoyenia White, 1929, and Anchorichnus Heinberg, 1974 by the absence of wall, wall striations, and peripheral mantle, respectively (Keighley and Pickerill, 1994). Taenidium is straight, curved or sinuous, variably oriented, unlined, essentially cylindrical and with meniscate backfilled; secondary successive branching may occur, but true branching is absent (Keighley and Pickerill, 1994). The structure of the meniscate fill is used for Taenidium at ichnospecies level (D’Alessandro and Bromley, 1987; D’Alessandro et al., 1987; Keighley and Pickerill, 1994; Bromley, 1996).

Keighley & Pickerill, 1994a

Emended diagnosis. Variably oriented, unwalled, straight, winding, curved, or sinuous, essentially cylindrical, meniscate backfilled trace fossils. Secondary successive branching may occur, but true branching is absent.

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Classification
Organism groupBiota
Ichnofossil groupIchnofossils
Soft-sediment trace fossils
Trackways and scratch imprints
OrderBiformitidae
FamilyArenicolitidae
Arthrophycidae
Asteriacitidae
Rhizocoralliidae
Rosselichnidae
Siphonichnidae
GenusAcanthorhaphe
Aglaspidichnus
Agrichnium
Altichnus
Amanitichnus
Amphorichnus
Ancorichnus
Angulichnus
Arachnomorphichnus
Arachnostega
Arborichnus
Archaeonassa
Arcuatichnus
Arenituba
Artharia
Asaphoidichnus
Asterichnus
Asterosoma
Astropolichnus
Aulichnites
Avipeda
Avolatichnium
Balanoglossites
Baroccoichnites
Beaconites
Bergaueria
Bestiopeda
Bicavichnites
Bichordites
Bifasciculus
Bifungites
Bilinichnus
Bolonia
Bornichnus
Bunyerichnus
Calycraterion
Camborygma
Capodistria
Caprionichnius
Cardioichnus
Caridolites
Catenarichnus
Catenichnus
Chagrinichnites
Cheiichnus
Chomatichnus
Chondrites
Circulichnis
Cladichnus
Clematischnia
Climactichnites
Cochlichnus
Compaginatichnus
Conichnus
Conostichus
Cruziana
Ctenopholeus
Curvolithus
Cycloichnus
Cylindricum
Dactyloidites
Deliatynichnis
Dendrorhaphe
Dendrotichnium
Dictyodora
Didymaulichnus
Didymaulyponomos
Diplopodichnus
Echinospira
Egoreichnis
Elingua
Enigmatichnus
Entradichnus
Epibaion
Estrellichnus
Falcichnites
Fimbritubichnus
Foveichnus
Fucoides circinatus
Fuersichnus
Funalichnus
Furculosus
Fustiglyphus
Glossifungites
Glyphichnus
Gordia
Guanshanichnus
Gyrochorte
Gyrolithes
Gyrophyllites
Haentzschelinia
Halimedides
Halopoa
Hartsellea
Heimdallia
Helicodromites
Heliochone
Helminthoida
Helminthoidichnites
Helminthopsis
Herpystezoum
Hondichnus
Hormosiroidea
Ilmenichnus
Imponoglyphus
Isopodichnus
Jamesonichnites
Katbergia
Keilorites
Kimberichnus
Koptichnus
Korymbichnus
Kouphichnium
Labyrintichnus
Lajasichnus
Lamonte
Lanicoidichna
Lennea
Lepeichnus
Lepidenteron
Liholites
Lingulichnites
Lingulichnus
Lithoplaision
Lockeia
Loloichnus
Lophoctenium
Lorenzinia
Macaronichnus
Maiakarichnus
Mammillichnis
Margaritichnus
Megagrapton
Mermia
Microspherichnus
Minterichnus
Monocraterion
Monofungites
Multilamella
Multina
Multipodichnus
Musculopodus
Naviculichnium
Nenoxites
Neoeione
Neonereites
Nereites (trace fossil)
Nummipera
Oikobesalon
Oldhamia
Olenichnus
Oniscoidichnus
Ophiomorpha
Oravaichnium
Palaeophycus
Paleodictyon
Paracanthorhaphe
Parahaentzschelina
Parapsammichnites
Parataenidium
Paratisoa
Parmaichnus
Parundichnia
Pentichnus
Petalichnus
Phoebichnus
Pholeus
Phycosiphon
Pilichnus
Piscichnus
Plagiogmus
Plangtichnus
Planispiralichnus
Planolites
Polarichnus
Polykampton
Polykladichnus
Protopaleodictyon
Protospiralichnus
Protovirgularia
Psammichnites
Psilonichnus
Pteraspisichnis
Ptychoplasma
Radiichnus
Radionereites
Rhadhostium
Rotamedusa
Rusophycus
Saerichnites
Sagittichnus
Saportia
Scalaridomus
Schaubcylindrichnus
Scolecocoprus
Scolicia
Scotolithus
Scoyenia
Selenichnites
Shanwangichnus
Sinusichnus
Skolichnus
Skolithos
Sokolovichnites
Solemyatuba
Sphaerichnus
Spirocosmorhaphe
Spirodesmos
Spirophycus
Spongelimorpha
Squamichnus
Squamodictyon
Steinsfjordichnus
Stelloglyphus
Streptichnus
Sustergichnus
Svalbardichnus
Syringomorpha
Taenidium
Speciesbarretti
bowni
cameroensis
crassum
crinoidiforme
diesingi
irregulare
maeandriformis
planicostatum
recurvum
serpentinum
GenusTambia
Taotieichnus
Taphrhelminthopsis
Taxichnites
Teichichnus
Ternavites
Tetraichnites
Thalassinoides
Torrowangea
Transexcrementum
Treptichnus
Triacliichnis
Trichichnus
Trichophycus
Trisulcus
Tuapseichnium
Tuberculichnus
Tubichnus
Tubotomaculum
Tylichnus
Undichna
Vagorichnus
Vermichnus
Virgaichnus
Volkichnium
Walcottia
Zoophycos
unrankedTrusheimichnus
References based on distribution