Triassic life of the Connecticut valley,

Lull, Richard Swann

doi:10.5962/bhl.title.70405

Cited by 55 publications

(84 citation statements)

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“…Concentrations of ferruginous material, called "fucoids" (Emerson, 1917, p. 94), also occur on the bedding planes. Dinosaur bones and tracks, as well as plant fossils, have been found previously in this area and in the Connecticut Valley lowland (Lull, 1953), but no fossils were found during the present investigation.…”

Section: Bedrock Geologysupporting

confidence: 50%

Geologic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut

Hartshorn¹,

Koteff²

1967

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Section: Bedrock Geologysupporting

confidence: 50%

Geologic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut

Hartshorn¹,

Koteff²

1967

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Section: General Observationsmentioning

confidence: 99%

“…It forms the basis of the family Anomoepodidae, which Lull (1953) attributed to an ornithopodan trackmaker. This ichnofamily originally contained only one ichnogenus (Anomoepus), which was traditionally considered to contain several ichnospecies (Lull 1953). However, Olsen & Rainforth (2003) considered that all ichnospecies within North America may be accommodated in A. scambus (however, for alternative views, see Lockley (2005) and Lockley & Gierlinski (2006)).…”

Section: General Observationsmentioning

confidence: 99%

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Ichnological evidence for small quadrupedal ornithischians from the basal Cretaceous of SE Asia and North America: implications for a global radiation

Lockley¹,

McCrea

Matsukawa

2009

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Tracks of small quadrupedal ornithischians with five manual and four pedal digits have been recorded from sedimentary rocks near the Late Jurassic-Early Cretaceous (TithonianBerriasian) boundary in NE Thailand and British Columbia. These are compared with larger tracks of gracile, quadrupedal ornithopods from the earliest Cretaceous of Spain and smaller tracks of a quadruped of unknown age from Zimbabwe. The Thai and Canadian tracks are similar to the Early Jurassic (Liassic) ichnogenus Anomoepus and the small ornithopod tracks from the Late Jurassic of Spain. They are the only known post-Liassic ornithischian tracks in which up to five discrete manus digit impressions are clearly visible. Based on strong heteropody (manus much smaller than pes) in all cases we infer an ornithopod trackmaker rather than another ornithischian. The scattered, but widespread earliest Cretaceous occurrence of this ichnotaxon, herein assigned to Neoanomoepus perigrinatus ichnogen. and ichnosp. nov., on the basis of type material from Canada, suggests that these hitherto unknown earliest Cretaceous ichnofaunas may represent a radiation of small basal ornithopods (pes length less than 15 cm), appearing before the widespread radiation of large ornithopods (pes length up to 60 cm or more) later in the Neocomian (Valanginian-Barremian), Aptian-Albian and Late Cretaceous. The primitive condition of the trackmaker is indicated by the pedal and manual morphology, which consists of four and five digits respectively that are not enclosed by well-developed fleshy padding or integument. In contrast, all larger Cretaceous ornithopod tracks, mostly from post-Berriasian strata, have only three pedal digits enclosed in fleshy pads and a manus in which all functional digits are reduced and enclosed by substantial flesh.

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“…The Mount Tom quadrangle is underlain by sedimentary and igneous rocks of the Newark Series of upper Triassic age (Lull, 1917;Emerson, 1917) and by a minor amount of crystalline rock of probable Carboniferous age (Willard, 1956 (Emerson, 1917;Willard 1956 …”

Section: Bedrock Geologymentioning

confidence: 99%

Surficial geology of the Mount Tom quadrangle, Massachusetts

Larsen¹

1972

Open-File Report

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Triassic life of the Connecticut valley,

Cited by 55 publications

References 0 publications

Geologic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut

Geologic map of the Springfield South quadrangle, Hampden County, Massachusetts, and Hartford and Tolland Counties, Connecticut

Ichnological evidence for small quadrupedal ornithischians from the basal Cretaceous of SE Asia and North America: implications for a global radiation

Surficial geology of the Mount Tom quadrangle, Massachusetts

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