Ichnospecies: caudatus E. HITCHCOCK, 1858
Etymology: Latin, caudatus, "tail."

Holotype: Amherst collection 42/5

Locality: Turners Falls, 42°36’43”, 72°03’88”, Deerfield Basin, Franklin County, Massachusetts.

Horizon: Turners Falls Formation.

Biostratigraphy:

Age: Late Triassic.

Material: 5 toed manus and 4 toed pes prints of an occasionally quadrapedal.

Referred material:

Localities: Lily Pond and Turners Falls, Mass.

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Ichnospecies: expansus C. H. HITCHCOCK, 1866
Etymology:

Holotype: Dartmouth College Collection 5102

Locality: Ferry above Turners Falls, near Greenfield, Massachusetts.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material: 4 toed prints of a occasionally quadrapedal.
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Ichnospecies: mapperleyensis (SARJEANT, 1967) SARJEANT, 1996
Eytmology: In reference to Mapperley Park, Nottingham County, England, Southern United Kingdom.
= Swinnertonichnus mapperleyensis SARJEANT, 1967

Holotype:

Locality: Mapperley Park, Nottingham County, England, Southern United Kingdom.

Horizon: Waterstones.

Biostratigraphy:

Age: Lower Ladinian Stage, Upper Mid Triassic Epoch, Middle Triassic.

Material: Single pes print from a partial trackway with webbed toes.