Limnopus cf. zeilleri ( Delage, 1912 )
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publication ID |
https://doi.org/ 10.5281/zenodo.13510407 |
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persistent identifier |
https://treatment.plazi.org/id/03F387F5-1634-7C3A-FFBE-FC5F8F9B6396 |
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treatment provided by |
Felipe |
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scientific name |
Limnopus cf. zeilleri ( Delage, 1912 ) |
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Limnopus cf. zeilleri ( Delage, 1912)
Figs. 4A–F View Fig , 5A View Fig .
Material.—Muz. PIG OS−220/31A: 1, slab with moulds on the upper surface of the sandstone slab and Muz. PIG OS−220/31B: 1, with their natural casts showing left manual imprint, with other accompanying poorly preserved imprints ( Figs. 4F View Fig , 5A View Fig ); Muz. PIG OS−220/50: 1 isolated, poorly preserved (?) left pedal imprint. Many incompletely preserved, not catalogued and not numbered imprints ( Fig. 4A–E View Fig ) representing this ichnogenus have been found on two track−bearing surfaces in the upper and in the middle part of the Tumlin Gród quarry section.
Description.—Poorly preserved material did not allow recognition of any trackway pattern or even a fully impressed footprint, despite their common presence. Imprints are incomplete, composed mostly of the rounded imprints of digit tips preserved as concave, shallow hollows being concave moulds on the upper side of the layer, or natural casts on the bottom side ( Fig. 4A–E View Fig ). Digit tip imprints are differentiated in size, placed along arcs, showing no claw marks ( Figs. 4A–F View Fig , 5A View Fig ). Except for digit tips, other parts of imprints are usually not observed, except for the specimen Muz. PIG OS−220/31A: 1 and Muz. PIG OS−220/31B: 1, the mould and its natural cast ( Figs. 4F View Fig , 5A View Fig ), fully preserved manual imprint. This imprint shows the presence of only four digits. The rounded digit I tip imprint is the largest, about 20 mm in diameter. Other digit tip imprints are 11–14 mm. The width of the digit group I–IV is 87 mm; its length attains about 70 mm. In other, partial imprints on the same slab, the length of the arc formed by digit tips attains up to 100 mm. No metapodial joint has been observed.
Remarks.—The shape, size, mode of preservation, number of manual digits, rounded digit tips, lack of claw marks and the absence of a metapodial joint allow recognition of these footprints as amphibian Limnopus tracks. Similarly preserved tracks, often with enlarged I digit tip imprint (see Haubold 1971b: 17) of the same size and shape were observed in the Permian of France ( Gand and Haubold 1984; Gand 1985, 1987, 1991, 1993; Demathieu et al. 1992; Gand et al. 1997), attributed mostly to the ichnospecies Limnopus zeilleri ( Delage, 1912) . Specimens from Tumlin Gród are similar to this ichnospecies and to Limnopus sp. representatives from Val Gardena Sandstone ( Conti et al. 1977).
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