Morphobank

Project 5260: X. Xu, M. A. Norell, X. Wang, P. J. Makovicky, X. Wu. 2002. A basal troodontid from the Early Cretaceous of China. Nature. 415 (6873):780-784.

Specimen: † Chirostenotes pergracilis (unvouchered)
View: Part (fossil)

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Abstract

Troodontid dinosaurs form one of the most avian-like dinosaur groups. Their phylogenetic position is hotly debated, and they have been allied with almost all principal coelurosaurian lineages. Here we report a basal troodontid dinosaur, Sinovenator changii gen. et sp. nov., from the lower Yixian Formation of China. This taxon has several features that are not found in more derived troodontids, but that occur in dromaeosaurids and avialans. The discovery of Sinovenator and the examination of character distributions along the maniraptoran lineage indicate that principal structural modifications toward avians were acquired in the early stages of maniraptoran evolution.

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Article DOI: 10.1038/415780a

Project DOI: 10.7934/P5260, http://dx.doi.org/10.7934/P5260

This project contains	Matrices
6 Media 1 Matrix 1 Document 47 Taxa 6 Specimens 206 Characters Total size of project's media files: 19.11M Download Project SDD File	Total scored cells: 4758 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 206 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 481 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:206/0

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MorphoBank Project 5260

Creation Date:
27 May 2024
Publication Date:
02 July 2024
Matrix downloads: 3

Authors' Institutions

American Museum of Natural History (AMNH)

Canadian Museum of Nature

Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), CAS

Field Museum of Natural History

Members

Shreya Jariwala
Project Administrator

206

4758
(4563, 0, 195)

Taxonomic Overview for Matrix 'M29835' (47 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Allosaurus fragilis Taxon name last Modified on 05/27/24	12	193	193	0	1	0	0	1
[2] † Ingenia yanshini Taxon name last Modified on 05/27/24	104	91	91	0	11	0	0	1
[3] † Oviraptor mongoliensis Taxon name last Modified on 05/27/24	127	67	67	0	12	0	0	1
[4] † Oviraptor philoceratops Taxon name last Modified on 05/27/24	135	59	59	0	12	0	0	1
[5] † Conchoraptor gracilis Taxon name last Modified on 05/27/24	90	103	103	0	13	0	0	1
[6] † IGM 100/42 Taxon name last Modified on 05/27/24	15	177	177	0	14	0	0	1
[7] † Chirostenotes pergracilis Taxon name last Modified on 05/27/24	116	78	78	0	12	0	0	1
[8] † Dromaeosaurus albertensis Taxon name last Modified on 05/27/24	136	70	70	0	0	0	0	1
[9] † Deinonychus antirrhopus Taxon name last Modified on 05/27/24	48	158	158	0	0	0	0	1
[10] † Velociraptor mongoliensis Taxon name last Modified on 05/27/24	6	200	200	0	0	0	0	1
[11] † Mononykus olecranus Taxon name last Modified on 05/27/24	119	82	82	0	5	0	0	1
[12] † Shuuvuia deserti Taxon name last Modified on 05/27/24	20	174	174	0	12	0	0	1
[13] † Patagonykus puertai Taxon name last Modified on 05/27/24	166	40	40	0	0	0	0	1
[14] † Alvarezsaurus calvoi Taxon name last Modified on 05/27/24	172	33	33	0	1	0	0	1
[15] † Ornitholestes hermanni Taxon name last Modified on 05/27/24	89	117	117	0	0	0	0	1
[16] † Microvenator celer Taxon name last Modified on 05/27/24	139	66	66	0	1	0	0	1
[17] † Archeopteryx lithographica Taxon name last Modified on 05/27/24	41	162	162	0	3	0	0	1
[18] † Avimimus portentosus Taxon name last Modified on 05/27/24	97	96	96	0	13	0	0	1
[19] † Caudipteryx zoui Taxon name last Modified on 05/27/24	116	79	79	0	11	0	0	1
[20] † Unenlagia comahuensis Taxon name last Modified on 05/27/24	170	36	36	0	0	0	0	1
[21] † Confuciusornis sanctus Taxon name last Modified on 05/27/24	90	109	109	0	7	0	0	1
[22] † Rahonavis ostromi Taxon name last Modified on 05/27/24	148	57	57	0	1	0	0	1
[23] † Struthiomimus altus Taxon name last Modified on 05/27/24	18	174	174	0	14	0	0	1
[24] † Gallimimus bullatus Taxon name last Modified on 05/27/24	11	181	181	0	14	0	0	1
[25] † Garudimimus brevipes Taxon name last Modified on 05/27/24	133	62	62	0	11	0	0	1
[26] † Pelecanimimus polyodon Taxon name last Modified on 05/27/24	162	41	41	0	3	0	0	1
[27] † Harpymimus okladnikovi Taxon name last Modified on 05/27/24	170	33	33	0	3	0	0	1
[28] † Troodon formosus Taxon name last Modified on 05/27/24	80	125	125	0	1	0	0	1
[29] † Saurornithoides mongoliensis Taxon name last Modified on 05/27/24	133	73	73	0	0	0	0	1
[30] † Byronosaurus jaffei Taxon name last Modified on 05/27/24	140	64	64	0	2	0	0	1
[31] † Saurornithoides junior Taxon name last Modified on 05/27/24	131	74	74	0	1	0	0	1
[32] † Sinornithoides youngi Taxon name last Modified on 05/27/24	119	86	86	0	1	0	0	1
[33] † Segnosaurus galbinensis Taxon name last Modified on 05/27/24	149	57	57	0	0	0	0	1
[34] † Erlikosaurus andrewsi Taxon name last Modified on 05/27/24	119	81	81	0	6	0	0	1
[35] † Alxasaurus elesitaiensis Taxon name last Modified on 05/27/24	134	71	71	0	1	0	0	1
[36] † Tyrannosaurus rex Taxon name last Modified on 05/27/24	16	188	188	0	2	0	0	1
[37] † Albertosaurus libratus Taxon name last Modified on 05/27/24	21	182	182	0	3	0	0	1
[38] † Sinraptor dongi Taxon name last Modified on 05/27/24	38	167	167	0	1	0	0	1
[39] † Adasaurus mongoliensis Taxon name last Modified on 05/27/24	187	19	19	0	0	0	0	1
[40] † Utahraptor ostrommaysorum Taxon name last Modified on 05/27/24	182	24	24	0	0	0	0	1
[41] † Saurornitholestes langstoni Taxon name last Modified on 05/27/24	157	49	49	0	0	0	0	1
[42] † Achillobator giganticus Taxon name last Modified on 05/27/24	136	70	70	0	0	0	0	1
[43] † IGM 100/1015 Taxon name last Modified on 05/27/24	119	87	87	0	0	0	0	1
[44] † Sinornithosaurus millenii Taxon name last Modified on 05/27/24	109	97	97	0	0	0	0	1
[45] † Sinovenator changii Taxon name last Modified on 05/27/24	67	138	138	0	1	0	0	1
[46] † Microraptor zhaoianus Taxon name last Modified on 05/27/24	102	104	104	0	0	0	0	1
[47] † Incisivosaurus gauthieri Taxon name last Modified on 05/27/24	135	69	69	0	2	0	0	1

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	5
Matrix downloads	3	Xu et al 2022 (3 downloads);
Document downloads	2	Xu et al 2022 (Original PBDB Matrix) (2 downloads);