Yanornithiformes is an order of ornithuromorph birds from the early Cretaceous Period of China. All known specimens come from the Yixian Formation and Jiufotang Formation, dating to the early Aptian age, 124.6 to 120 million years ago. Beginning in 2012, several studies began to find that the hongshanornithids, smaller, more specialized birds from the same time and place as some of the songlingornithids, were more closely related to songlingornithids than to other early birds, making them part of the same clade, while some studies continued to find them just outside the yanonrithiform clade.
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| - Yanornithiformes (es)
- Yanornithiformes (en)
- Yanornithiformes (uk)
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| - Yanornithiformes — вимерлий ряд примітивних птахів, що існував у ранній крейді (125—120 млн років тому). Викопні рештки представників ряду знайдені у Китаї (у формаціях та Цзюфотан). Містить дві родини Hongshanornithidae та Songlingornithidae. (uk)
- Yanornithiformes es un orden extinto de aves ornituromorfas que aparecieron en China a principios del periodo Cretácico. Todos los especímenes conocidos provienen de las formaciones Yixian y , que datan de principios del Aptiano, hace 124,6 a 120 millones de años. (es)
- Yanornithiformes is an order of ornithuromorph birds from the early Cretaceous Period of China. All known specimens come from the Yixian Formation and Jiufotang Formation, dating to the early Aptian age, 124.6 to 120 million years ago. Beginning in 2012, several studies began to find that the hongshanornithids, smaller, more specialized birds from the same time and place as some of the songlingornithids, were more closely related to songlingornithids than to other early birds, making them part of the same clade, while some studies continued to find them just outside the yanonrithiform clade. (en)
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| - Artist's reconstruction of Yanornis martini (en)
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| - Songlingornithidae (en)
- Hongshanornithidae? (en)
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| - * Aberratiodontuiformes (Gong et al., 2004) (en)
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| - Yanornithiformes es un orden extinto de aves ornituromorfas que aparecieron en China a principios del periodo Cretácico. Todos los especímenes conocidos provienen de las formaciones Yixian y , que datan de principios del Aptiano, hace 124,6 a 120 millones de años. La familia Songlingornithidae fue nombrada por primera vez por Hou en 1997 para contener el género tipo, Songlingornis. Clarke y col. (2006) fueron los primeros en encontrar una relación cercana entre y los «yanornítidos», que previamente habían sido nombrados para contener a los géneros similares Yanornis y . Al menos un estudio descubrió que el ave mongol cretácea tardía, , es miembro de este grupo. La familia Yanornithidae (ahora ) había sido colocada en su propio orden que no contenía otras familias, llamadas Yanornithiformes, en 2001. A partir de 2012, varios estudios comenzaron a hallar que los hongshanornítidos, aves más pequeñas y especializadas de la misma época y lugar que algunos de los songlingornitídos, estaban más cercanamente relacionados con estos que a otras aves primitivas, haciéndolas parte del mismo clado, mientras que otros estudios han continuado determinando que están por fuera del clado de los yanonritiformes. (es)
- Yanornithiformes is an order of ornithuromorph birds from the early Cretaceous Period of China. All known specimens come from the Yixian Formation and Jiufotang Formation, dating to the early Aptian age, 124.6 to 120 million years ago. The family Songlingornithidae was first named by Hou in 1997 to contain the type genus, Songlingornis. Clarke et al. (2006) was first to find a close relationship between Songlingornis and the "yanornithids", which had been previously named to contain the similar species Yanornis and Yixianornis. At least one study has found the late Cretaceous Mongolian bird Hollanda to be a member of this group. The family Yanornithidae (now Songlingornithidae) had been placed in its own order containing no other families, named Yanornithiformes, in 2001. Beginning in 2012, several studies began to find that the hongshanornithids, smaller, more specialized birds from the same time and place as some of the songlingornithids, were more closely related to songlingornithids than to other early birds, making them part of the same clade, while some studies continued to find them just outside the yanonrithiform clade. (en)
- Yanornithiformes — вимерлий ряд примітивних птахів, що існував у ранній крейді (125—120 млн років тому). Викопні рештки представників ряду знайдені у Китаї (у формаціях та Цзюфотан). Містить дві родини Hongshanornithidae та Songlingornithidae. (uk)
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