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Helodus (from Gr****: ἧλος helos, 'stud' and Gr****: ὀδούς odoús 'tooth') is an
extinct genus of
cartilaginous fish from the
Upper Devonian through Lower...
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Helodus...
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Gyracanthus G.
duplicatus Haplolepis H. cf.
corrugata H. cf.
canadensis Helodus indeterminate Megalichthys indeterminate Sagenodus S.
cristatus S. plicatus...
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radians Marsh, 1877 †
Helodus Ag****iz, 1838 †
Helodus coniculus Newberry & Worthen, 1866 †
Helodus crenulatis Newberry & Worthen, 1866 †
Helodus simplex Ag****iz...
- E.
nitidus Geraldine, Coprolite,
Loftin A
megalichthyid tetrapodomorph Helodus H. sp.
Geraldine Rare
holocephalan teeth Hybodus H. sp.
Coprolite A hybodont...
- Torpedo, Trygon)
Subclass 2.
Bradyodonti Order 1. †Eubradyodonti (e.g., †
Helodus)
Order 2.
Holocephali (e.g., Chimaera)
class Actinopterygii [p. 228] Superorder...
- †Halogetocrinus
boellstorffae – type
locality for
species †Halysites †
Helodus †
Helodus rugosus †Heslerodus †Heslerodus
divergens †Hollinella †Holmsella †Hustedia...
- well as the tooth-plates of
cartilaginous fishes similar to
Lagarodus or
Helodus, both
believed to be
bottom dwelling durophages.
Teeth and
scales belonging...
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Deltodus tubineus (Cochliodontidae), Harpago****utor sp. (Chondrenchelyidae),
Helodus ?simplex (Helodontiformes),
Onychoselache (shark fin spines), Platyxystrodus...
- †Helicelasma
selectum †Helicoprion †Helicoprion
davisii †
Helodus †
Helodus rugosus †
Helodus subpolitus – type
locality for
species †Heslerodus †Heslerodus...
