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Musivavis amabilis
Taxonomy
Musivavis amabilis was named by Wang et al. (2022). Its type specimen is MHGU-3000, a skeleton (nearly complete and articulated skeleton preserved in a single slab), and it is a 3D body fossil. Its type locality is Shangheshou, which is in an Aptian lacustrine sandstone/mudstone in the Jiufotang Formation of China. It is the type species of Musivavis.
Synonymy list
| Year | Name and author |
|---|---|
| 2022 | Musivavis amabilis Wang et al. |
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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.
†Musivavis amabilis Wang et al. 2022
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| X. Wang et al. 2022 | Musivavis amabilis n. gen. n. sp. can be referred to Enantiornithes by possessing several synapomorphies of this clade, such as the sternum with nearly equal length and width, the “Y”-shaped furcula with a long hypocleideum, the minor metacarpal extending farther distally than the major metacarpal, and the fourth metatarsal relatively thin (Chiappe and Walker, 2002). It can be further referred to the “Bohaiornithidae-grade” group by possessing some of the diagnostic features of this family, such as the subconical teeth with tapered and slightly caudally recurved tips, the sternum with lateral trabecula projected caudolaterally, the omal end of furcular ramus with blunt expansion, and the tapered pygostyle without abrupt distal constriction (M. Wang et al., 2014). It is distinguishable from the bohaiornithids by possessing the following unique combination of features (local autapomorphies denoted by asterisks): the pygostyle abruptly tapers distally (shared with Gretcheniao); the sulcus excavating the epicleideal ramus of the furcula is very deep and extends distally onto the proximal third of the hypocleideum*; a sharp keel runs along the whole ventral surface of the furcula, from the junction of the epicleideal rami to the distal tip of the hypocleideum; the flat cranial margin of the sternum becomes curved near the craniolateral process*; the sternum possesses craniolaterally projected craniolateral processes* (in bohaiornithids, only Zhouornis possesses craniolateral processes, which project laterally); the xiphoid process of the sternum extends nearly to the same level of the distal end of the lateral trabecula and expands as a blunt distal end (shared with Bohaiornis); and the first alular phalanx bears a transversally expanded proximal end followed by a gracile shaft, resulting in a concave proximomedial corner of the bone*. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Kiessling 2004, Marsh 1875 | |||||