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Aquatilavipes swiboldae
Taxonomy
Aquatilavipes swiboldae was named by Currie (1981). It is considered to be a form taxon. Its type specimen is BCPM 744, PMA P79.23.37 (now RTMP), a footprint, and it is a trace fossil. Its type locality is north shore, Peace River Canyon, which is in an Aptian terrestrial siltstone in the Gething Formation of Canada.
Synonymy list
| Year | Name and author |
|---|---|
| 1981 | Aquatilavipes swiboldae Currie p. 259 figs. 1-2 |
| 1992 | Aquatilavipes swiboldae Lockley p. 274 |
| 2001 | Aquatilavipes swiboldae McCrea and Sarjeant p. 461 |
| 2002 | Aquatilavipes swiboldae Azuma et al. p. 3 |
| 2009 | Aquatilavipes swiboldae Anfinson et al. p. 890 |
| 2011 | Aquatilavipes swiboldae Fiorillo et al. p. 37 |
| 2011 | Aquatilavipes swiboldae Xing et al. p. 312 |
| 2014 | Aquatilavipes swiboldae McCrea et al. p. 86 |
| 2015 | Aquatilavipes swiboldae Currie and Koppelhus p. 626 |
| 2015 | Aquatilavipes swiboldae McCrea et al. p. 4 |
| 2016 | Aquatilavipes swiboldae Buckley et al. p. 261 |
| 2019 | Aquatilavipes swiboldae Fiorillo et al. p. 11 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Aquatilavipes swiboldae Currie 1981
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. T. McCrea and W. A. S. Sarjeant 2001 | A species of Aquatilavipes of small size, with slim digits; the thickness of the slimmest digit (III) is less than 8% of its length, the others being somewhat thicker (up to 12.5‡ of length). All digits terminate in claws, that on digit III being especially acute. The digits were flexible, digits II and III generally curving inward distally, digit IV outward. Digit III is about 50% longer than digit II and 40% longer than digit IV. Total interdigital span varies from 90° to 130°, averaging 113°.
The angle of the footprints to the center of the trackway (footprint rotation) varies, but they tend to be directed inward. The trackway is of moderate breadth. | |
| A. R. Fiorillo et al. 2011 | Three slender toe impressions, with individ- ual pes impressions wider than long. No hallux (Digit I) impression. Divarication angle between digits II and IV greater than 100◦. Digit III is the longest and digit IV is longer than digit II. Individual tracks are generally less than 4.5 cm long with a width approximately 26% greater than the length. |