Fossil Footprints from the Pennsylvanian System in Ohio

Carman, J. Ernest

doi:10.1130/gsab-38-385

Cited by 21 publications

(9 citation statements)

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“…Distinguishing features of Pseudobradypus, as described by Carman (1927), Sternberg (1933), and Haubold (1971), include the pes being larger in size than the manus, acuminating claws on digits I to IV, fairly rounded sole impressions, a laterally extended digit V, and digits increasing in length from I to IV (with digit V having the same length as digit IV). The pes and manus are also pentadactyl.…”

Section: Remarksmentioning

confidence: 99%

A Mississippian trackway (Pseudobradypus ichnosp.) from the Enragé Formation, New Brunswick, Canada

Wood

Miller

2007

atgeol

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A tetrapod trackway, identified as Pseudobradypus ichnosp., from the Upper Mississippian Enragé Formation represents one of the few occurrences of fossil vertebrate tracks documented in New Brunswick. It was collected from red mudstone near Green Creek, Upper Rockport, New Brunswick on the Maringouin Peninsula. The Enragé Formation is Namurian age and is the top of the Mabou Group in New Brunswick. As Pseudobradypus is often attributed to a captorhinomorph reptile trackmaker, this specimen may be considered among the early evidence for reptiles (amniotes). RÉSUMÉUn sillon de tétrapode, identifié à titre de Pseudobradypus ichnosp., de la Formation du Mississippien supérieur d'Enragé, représente l'un des rares cas de présence d'empreintes de vertébré fossile documentés au Nouveau-Brunswick. On a prélevé ces empreintes dans du mudstone rouge près de la crique Green, à Upper Rockport (Nouveau-Brunswick), sur la péninsule de Maringouin. La Formation d'Enragé remonte au Namurien et se trouve au sommet du groupe de Mabou au Nouveau-Brunswick. Comme on rattache souvent le Pseudobradypus à un reptile captorhinomorphe auteur d'empreintes, ce spécimen peut être considéré comme l'un des premiers signes de la présence des reptiles (amniotes). [Traduit par la redaction]

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Section: Remarksmentioning

confidence: 99%

A Mississippian trackway (Pseudobradypus ichnosp.) from the Enragé Formation, New Brunswick, Canada

Wood

Miller

2007

atgeol

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“…Some of the scenic features of Ohio are due to the work of glaciers and glacial streams. Their story need not be repeated here as it has been told in detail by Carman (1946), Hall (1953), and Marple (1954). The pre -Pleistocene drainage of Ohio was considerably modified by the passing of the glaciers.…”

Section: Besidesmentioning

confidence: 99%

Ohio fossils

Rocque¹,

Marple²

1955

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Paper sacks of various sizes for packing loose samples. (7) A hammer and a few cold chisels. (8) A lens for examining small specimens in the field; an 8-power lens is convenient and not too bulky. (9) A notebook for recording your observations. KINDS OF FOSSIL PRESERVATION. Some of the fossils you collect will prove a little puzzling. That is because fossils are preserved in different ways, and some knowledge of these processes will help you understand your specimens. The entire animal or plant may be preserved without alteration; this is called entire preservation. When minerals, precipitated from groundwater, fill the openings in shell or bone, long after the flesh of the animal has decayed, the shell or bone becomes heavier and harder; this process is called permineralization and many Ohio fossils are preserved in this way. The groundwater may dissolve away some or USE OF KEYS. You will soon be able to identify your specimens to phylun or class. Once you know you have a brachiopod, for instance, and know its approximate age, for example Silurian (see fig. 4, p. 8), use the "Key to the Commoner Silurian Brachiopods of Ohio" (p. 62) to find out the genus to which your specimen belongs. Start out with No. 1 and decide which one of the two choices fits your specimen. Go on to the number to the right of that choice and decide between the two new possibilities offered. Repeat the process until you come to a name instead of a number. The name should be that of your fossil. Look it up in the text and check with the description and figure to make sure you "keyed" it out correctly. Don't be too surprised if your specimen does not "key out. " It may belong to one of the scarcer forms and you may have to hunt it up in more advanced books. References to specialized books are given in each chapter. Finally, don't hesitate to bring your puzzling specimens to a specialist, but don't give up too easily. Most paleontologists are pretty good-natured about helping out and you may have found something really worthwhile that may interest him. Survey issues a free list of publications (Watkins 1953) available on request, and a bibliography of Ohio Geology (Watkins 1953a). Their geologic map of Ohio (Bownocker, 1920) is indispensable. Books that are out of print can usually be found in public libraries throughout the state. If they are not in your public library, they may be studied in college or university libraries; scarcely a single town in Ohio is more than 50 miles from a college library. Some of these books may be picked up from time to time in secondhand book stores.

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“…Angles (α, β) shall be included with unit 'degree'. "Baropus hainesi" (Carman, 1927) (A, C) and "Megabaropus hainesi" (Baird, 1952) "Ichniotherium willsi" (Haubold & Sarjeant, 1973)…”

Section: Table 2(on Next Page)mentioning

confidence: 99%

“…Ichniotherium tracks with relatively short pedal digit V (length ratio p V /p IV < 0.6) are much more common with undoubted occurrences from the Czech Republic (Fritsch, 1887(Fritsch, , 1895(Fritsch, , 1912, Germany (Pabst, 1908;Haubold, 1971;Haubold & Stapf, 1998;Voigt & Haubold, 2000;Voigt, 2005, Great Britain (Haubold & Sarjeant, 1973, 1974, Morocco (Lagnaoui, Voigt, Belahmira, Saber, Klein, Hminna & Schneider, in press), Poland (Pabst, 1908;Voigt, Niedźwiedzki, Raczyński, Mastalerz & Ptaszyński, 2012), and the United States of America (Carman, 1927;Baird, 1952;Voigt et al, 2005;Voigt & Lucas, 2015, 2017b. During the last decade numerous additional finds and yet unpublished revision studies of previously recorded but misidentified specimens significantly extended the global record of Ichniotherium tracks with relatively short pedal digit V. Among these records only some include a notable sample of actual trackways, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Supplemental Information 6: PCA Results Based on Logarithmized Length Ratios

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Ichniotherium tracks with a relatively short pedal digit V (digit length ratio V/IV < 0.6) form the majority of yet described Late Carboniferous to Early Permian diadectomorph tracks and can be related to a certain diadectid clade with corresponding phalangeal reduction that includes Diadectes and its close relatives. Here we document the variation of digit proportions and trackway parameters in 25 trackways (69 step cycles) from nine localities and seven further specimens with incomplete step cycles from the type locality of Ichniotherium cottae (Gottlob quarry) in order to find out whether this type of Ichniotherium tracks represents a homogeneous group or an assemblage of distinct morphotypes and includes variability indicative for evolutionary change in trackmaker locomotion. According to our results, the largest sample of tracks from three Lower Permian sites of the Thuringian Forest, commonly referred to Ichniotherium cottae, is not homogeneous but shows a clear distinction in pace length, pace angulation, apparent trunk length and toe proportions between tracks from Bromacker quarry and those from the stratigraphically older sites Birkheide and Gottlob quarry. Three Late Carboniferous trackways of Ichniotherium with relatively short pedal digit V from Haine's Farm, Ohio, and Alveley near Birmingham, United Kingdom, that have been referred to the ichnotaxa "Baropus hainesi", "Megabaropus hainesi" and "Ichniotherium willsi", respectively, share a marked outward rotation of foot imprints with respect to walking direction. Apart from this feature they are in many aspects similar to the Birkheide and Gottlob records of Ichniotherium cottae. With the possible exception of the Maroon Formation (Early Permian, Colorado) sample, Early Permian Ichniotherium trackways with a relatively short pedal digit V fall into the morphological spectrum of the three well defined 'Hainesi-Willsi', 'Birkheide-Gottlob' and 'Bromacker' morphotypes. With their more obtuse pace angulations and higher body-size-normalized pace and stride lengths the Bromacker type tracks imply higher walking speeds of their trackmakers compared to all other Ichniotherium tracks. More generally, a trend towards higher locomotion capability from the last common

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Fossil Footprints from the Pennsylvanian System in Ohio

Cited by 21 publications

References 0 publications

A Mississippian trackway (Pseudobradypus ichnosp.) from the Enragé Formation, New Brunswick, Canada

A Mississippian trackway (Pseudobradypus ichnosp.) from the Enragé Formation, New Brunswick, Canada

Ohio fossils

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