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Ignotornidae
Taxonomy
Ignotornidae was named by Lockley et al. (1992). It is not extant. Its type is Ignotornis.
It was assigned to Aves by Lockley et al. (1992), Lockley et al. (2006) and Kim et al. (2006); and to Aves by Kim et al. (2012) and Buckley et al. (2016).
It was assigned to Aves by Lockley et al. (1992), Lockley et al. (2006) and Kim et al. (2006); and to Aves by Kim et al. (2012) and Buckley et al. (2016).
Subtaxa
Synonymy list
Year | Name and author |
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1992 | Ignotornidae Lockley et al. pp. 121-122 fig. 1,2 |
2006 | Ignotornidae Kim et al. p. 62 |
2006 | Ignotornidae Lockley et al. p. 95 |
2012 | Ignotornidae Kim et al. p. 33 |
2016 | Ignotornidae Buckley et al. p. 261 |
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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.
Fm. †Ignotornidae Lockley et al. 1992
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G. †Ignotornis Mehl 1931
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†Ignotornis gajinensis Kim et al. 2012
†Ignotornis mcconnelli Mehl 1931
†Ignotornis yangi Kim et al. 2006
Diagnosis
Reference | Diagnosis | |
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J. Y. Kim et al. 2012 | Tetradactyl bird tracks show prominent, postero medially directed hallux impressions comprising about one-third of total track length. Hypex between digits III and IV is more anteriorly situated than hypex between digits II and III, with the tendency for development of asymmetric, semipalmate web that is more strongly developed between digits III and IV. Digit divarication between II and IV averages at least 110–120◦ wide. Digit pad impressions are variable but sometimes show a 2-3-4 phalangeal formula corresponding to digits II, III, and IV. Step is typically short with a strong tendency towards inward rotation. |