Morphobank

Project 5400: R. J. O’Flynn, M. Williams, Y. Liu, X.-G. Hou, J. Guo, G. D. Edgecombe. 2024. The early Cambrian Kuamaia lata, an artiopodan euarthropod with a raptorial frontal appendage. Journal of Paleontology. (In Press)

Specimen: † Kuamaia lata (YKLP/17296)
View: general habitus

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Abstract

Phylogenetic analysis demonstrates that Kuamaia lata Hou, 1987, a helmetiid euarthropod from the lower Cambrian (Series 2, Stage 3) Chengjiang Konservat-Lagerstätte, nests robustly within Artiopoda Hou and Bergström, 1997, the euarthropod clade including trilobitomorphs. Microtomography of new specimens of K. lata reveals details of morphology, notably a six-segmented head and raptorial frontal appendages, the latter contrasting with filiform antennae considered to be a diagnostic character of Artiopoda. Phylogenetic analyses demonstrate that a raptorial frontal appendage is a symplesiomorphy for upper stem-group euarthropods, retained across a swathe of tree space, but evolved secondarily in K. lata from an antenna within Artiopoda. The phylogenetic position of K. lata adds support to a six-segmented head being an ancestral state for upper stem- and crown-group euarthropods.

Project DOI: 10.7934/P5400, http://dx.doi.org/10.7934/P5400

This project contains	Matrices
1 Media 1 Matrix 85 Taxa 1 Specimen 283 Characters Total size of project's media files: 868.23k Download Project SDD File	Total scored cells: 22386 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 283 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 643 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:283/0

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MorphoBank Project 5400

Creation Date:
21 July 2024
Publication Date:
21 July 2024

Members

Robert O'Flynn
Project Administrator

283

22386
(14402, 0, 7984)

Taxonomic Overview for Matrix 'M29994' (85 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] Priapulus caudatus Taxon name last Modified on 07/21/24	2	53	53	0	228	0	0	1
[2] † Cricocosmia jinningensis Taxon name last Modified on 07/21/24	7	54	54	0	222	0	0	1
[3] tardigrada Taxon name last Modified on 07/21/24	6	107	107	0	170	0	0	1
[4] † Microdictyon sinicum Taxon name last Modified on 07/21/24	14	116	116	0	153	0	0	1
[5] † Paucipodia inermis Taxon name last Modified on 07/21/24	16	109	109	0	158	0	0	1
[6] † Cardiodictyon catenulum Taxon name last Modified on 07/21/24	17	114	114	0	152	0	0	1
[7] † Hallucigenia sparsa Taxon name last Modified on 07/21/24	11	120	120	0	152	0	0	1
[8] † Hallucigenia fortis Taxon name last Modified on 07/21/24	14	117	117	0	152	0	0	1
[9] † Collinsium ciliosum Taxon name last Modified on 07/21/24	18	114	114	0	151	0	0	1
[10] † Luolishania longicruris Taxon name last Modified on 07/21/24	14	118	118	0	151	0	0	1
[11] † Onychodictyon ferox Taxon name last Modified on 07/21/24	14	117	117	0	152	0	0	1
[12] † Aysheaia pedunculata Taxon name last Modified on 07/21/24	12	114	114	0	157	0	0	1
[13] † Antennacanthopodia gracilis Taxon name last Modified on 07/21/24	13	112	112	0	158	0	0	1
[14] onychophora Taxon name last Modified on 07/21/24	5	117	117	0	161	0	0	1
[15] † Megadictyon haikouensis Taxon name last Modified on 07/21/24	17	108	108	0	158	0	0	1
[16] † Pambdelurion whittingtoni Taxon name last Modified on 07/21/24	40	109	109	0	134	0	0	1
[17] † Kerygmachela kierkegaardi Taxon name last Modified on 07/21/24	43	110	110	0	130	0	0	1
[18] † Opabinia regalis Taxon name last Modified on 07/21/24	43	107	107	0	133	0	0	1
[19] † Anomalocaris canadensis Taxon name last Modified on 07/21/24	23	142	142	0	118	0	0	1
[20] † Lyrarapax unguispinus Taxon name last Modified on 07/21/24	26	139	139	0	118	0	0	1
[21] † Amplectobelua symbrachiata Taxon name last Modified on 07/21/24	18	147	147	0	118	0	0	1
[22] † Peytoia nathorsti Taxon name last Modified on 07/21/24	25	140	140	0	118	0	0	1
[23] † Stanleycaris hirpex Taxon name last Modified on 07/21/24	29	137	137	0	117	0	0	1
[24] † Aegirocassis benmoulai Taxon name last Modified on 07/21/24	67	102	102	0	114	0	0	1
[25] † Hurdia victoria Taxon name last Modified on 07/21/24	31	134	134	0	118	0	0	1
[26] † Schinderhannes bartelsi Taxon name last Modified on 07/21/24	46	121	121	0	116	0	0	1
[27] † Fengzhengia mamingae Taxon name last Modified on 07/21/24	45	168	168	0	70	0	0	1
[28] † Kylinxia zhangi Taxon name last Modified on 07/21/24	12	203	203	0	68	0	0	1
[29] † Kiisortoqia soperi Taxon name last Modified on 07/21/24	32	172	172	0	79	0	0	1
[30] † Bushizheia yangi Taxon name last Modified on 07/21/24	32	175	175	0	76	0	0	1
[31] † Habelia optata Taxon name last Modified on 07/21/24	14	198	198	0	71	0	0	1
[32] † Mollisonia plenovenatrix Taxon name last Modified on 07/21/24	14	200	200	0	69	0	0	1
[33] Limulus polyphemus Taxon name last Modified on 07/21/24	1	210	210	0	72	0	0	1
[34] † Dibasterium durgae Taxon name last Modified on 07/21/24	24	187	187	0	72	0	0	1
[35] † Offacolus kingi Taxon name last Modified on 07/21/24	24	187	187	0	72	0	0	1
[36] † Haikoucaris ercaiensis Taxon name last Modified on 07/21/24	17	197	197	0	69	0	0	1
[37] † Yawunik kootenayi Taxon name last Modified on 07/21/24	7	208	208	0	68	0	0	1
[38] † Alalcomenaeus cambricus Taxon name last Modified on 07/21/24	6	209	209	0	68	0	0	1
[39] † Leanchoilia illecebrosa Taxon name last Modified on 07/21/24	6	209	209	0	68	0	0	1
[40] † Leanchoilia superlata Taxon name last Modified on 07/21/24	7	208	208	0	68	0	0	1
[41] † Fortiforceps foliosa Taxon name last Modified on 07/21/24	7	206	206	0	70	0	0	1
[42] † Tanglangia caudata Taxon name last Modified on 07/21/24	40	175	175	0	68	0	0	1
[43] † Yohoia tenuis Taxon name last Modified on 07/21/24	8	205	205	0	70	0	0	1
[44] † Sklerolibyon maomima Taxon name last Modified on 07/21/24	11	202	202	0	70	0	0	1
[45] † Jianfengia multisegmentalis Taxon name last Modified on 07/21/24	8	205	205	0	70	0	0	1
[46] † Forfexicaris valida Taxon name last Modified on 07/21/24	89	135	135	0	59	0	0	1
[47] † Occacaris oviformis Taxon name last Modified on 07/21/24	63	161	161	0	59	0	0	1
[48] † Surusicaris elegans Taxon name last Modified on 07/21/24	27	191	191	0	65	0	0	1
[49] † Isoxys auritus Taxon name last Modified on 07/21/24	20	198	198	0	65	0	0	1
[50] † Isoxys volucris Taxon name last Modified on 07/21/24	67	154	154	0	62	0	0	1
[51] † Isoxys curvirostratus Taxon name last Modified on 07/21/24	19	199	199	0	65	0	0	1
[52] † Isoxys acutangulus Taxon name last Modified on 07/21/24	23	195	195	0	65	0	0	1
[53] † Retifacies abnormalis Taxon name last Modified on 07/21/24	7	199	199	0	77	0	0	1
[54] † Sinoburius lunaris Taxon name last Modified on 07/21/24	15	192	192	0	76	0	0	1
[55] † Cindarella eucalla Taxon name last Modified on 07/21/24	5	202	202	0	76	0	0	1
[56] † Xandarella spectaculum Taxon name last Modified on 07/21/24	5	202	202	0	76	0	0	1
[57] † Olenoides serratus Taxon name last Modified on 07/21/24	4	203	203	0	76	0	0	1
[58] † Hongshiyanaspis yiliangensis Taxon name last Modified on 07/21/24	3	204	204	0	76	0	0	1
[59] † Eoredlichia intermedia Taxon name last Modified on 07/21/24	4	203	203	0	76	0	0	1
[60] † Misszhouia longicaudata Taxon name last Modified on 07/21/24	15	192	192	0	76	0	0	1
[61] † Naraoia compacta Taxon name last Modified on 07/21/24	15	192	192	0	76	0	0	1
[62] † Naraoia spinosa Taxon name last Modified on 07/21/24	15	192	192	0	76	0	0	1
[63] † Arthroaspis bergstroemi Taxon name last Modified on 07/21/24	13	195	195	0	75	0	0	1
[64] † Tegopelte gigas Taxon name last Modified on 07/21/24	10	197	197	0	76	0	0	1
[65] † Saperion glumaceum Taxon name last Modified on 07/21/24	6	201	201	0	76	0	0	1
[66] † Helmetia expansa Taxon name last Modified on 07/21/24	73	139	139	0	71	0	0	1
[67] † Kuamaia lata Taxon name last Modified on 07/21/24	7	202	202	0	74	0	0	1
[68] † Chengjiangocaris kunmingensis Taxon name last Modified on 07/21/24	6	204	204	0	73	0	0	1
[69] † Alacaris mirabilis Taxon name last Modified on 07/21/24	7	203	203	0	73	0	0	1
[70] † Liangwangshania biloba Taxon name last Modified on 07/21/24	10	199	199	0	74	0	0	1
[71] † Guangweicaris spinatus Taxon name last Modified on 07/21/24	12	198	198	0	73	0	0	1
[72] † Fuxianhuia protensa Taxon name last Modified on 07/21/24	3	207	207	0	73	0	0	1
[73] Narceus americanus Taxon name last Modified on 07/21/24	1	192	192	0	90	0	0	1
[74] Scutigera coleoptrata Taxon name last Modified on 07/21/24	3	190	190	0	90	0	0	1
[75] Artemia salina Taxon name last Modified on 07/21/24	2	212	212	0	69	0	0	1
[76] † Yicaris dianensis Taxon name last Modified on 07/21/24	7	207	207	0	69	0	0	1
[77] † Hesslandona unisulcata Taxon name last Modified on 07/21/24	17	197	197	0	69	0	0	1
[78] † Martinssonia elongata Taxon name last Modified on 07/21/24	10	204	204	0	69	0	0	1
[79] † Waptia fieldensis Taxon name last Modified on 07/21/24	7	211	211	0	65	0	0	1
[80] † Clypecaris serrata Taxon name last Modified on 07/21/24	48	173	173	0	62	0	0	1
[81] † Canadaspis perfecta Taxon name last Modified on 07/21/24	12	206	206	0	65	0	0	1
[82] † Tokummia katalepsis Taxon name last Modified on 07/21/24	16	203	203	0	64	0	0	1
[83] † Branchiocaris pretiosa Taxon name last Modified on 07/21/24	23	196	196	0	64	0	0	1
[84] † Odaraia alata Taxon name last Modified on 07/21/24	64	159	159	0	60	0	0	1
[85] † Jugatacaris agilis Taxon name last Modified on 07/21/24	30	191	191	0	62	0	0	1