Morphobank

Project 4516: B. Gudveig Baarli, B. Huang, L. S. Maroja. 2022. Phylogeny of the Ordovician and Silurian members of the order Atrypida. Journal of Systematic Palaeontology. 20 (1):2145920.

Specimen: † Protatrypa (unvouchered)
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Abstract

Brachiopods belonging to order Atrypida originated in the Middle Ordovician and went extinct in the Late Devonian. Few cladistic studies have been undertaken for this group. Here we investigate their early evolution through Silurian time. We present a parsimony-based phylogenetic analysis of 41 characters and 70 genera representing all the early taxonomic groups within the order. The stratigraphical record of the fossil genera analysed strongly aligns with the phylogeny recovered from our parsimony analysis. Most currently recognized subfamilies and families may be identified within clades, except for the Atrypinae, Idiospirinae, and the Septatrypidae. This warrants subdivision of the former and redefinition of the latter two. The subfamily Atrypinae is redefined, and a new subfamily of the Atrypidae, the Protatrypinae, is split off. Tracing character evolution across the tree indicates that the calcified spiralia and a jugum or jugal processes characterize all members of the Atrypida, except the most basal clade, the Cyclospiridae, which lacks a calcified jugum. Ribs are a homoplasious character, occurring in numerous clades throughout the tree. Darriwillian through Sandbian ages represent times with rapid evolution when most new autapomorphies seen in the atrypides evolved. This interval is the first major part of the Great Ordovician Biodiversification Event (GOBE). Solid teeth, dorsal direction of spiralia, elaborate ornamentation, and frills evolved in the latest Katian into early Silurian time. Solid teeth seen in distantly related clades from latest Katian onwards may be an analogous feature. The Late Ordovician Mass Extinction (LOME) is indicated in the stratigraphical tree together with a possible event at the end of the Aeronian. The tree supports the long-held assumptions that the Plectatrypinae evolved from the Spirigerininae. It further suggests that the genus Tuvaella may be included with the Davidsonioidea. Likewise, the redefined Atrypinae is a sister group of the Lissatrypidae and a derived group in the phylogenetic tree

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Article DOI: 10.1080/14772019.2022.2145920

Project DOI: 10.7934/P4516, http://dx.doi.org/10.7934/P4516

This project contains	Matrices
1 Media 1 Matrix 1 Document 70 Taxa 1 Specimen 41 Characters Total size of project's media files: 132.21k Download Project SDD File	Total scored cells: 2854 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 41 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 138 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:41/0

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MorphoBank Project 4516

Creation Date:
09 January 2023
Publication Date:
10 January 2023
Project views: 4971
Matrix downloads: 1

Authors' Institutions

Williams College

Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences

Members

MorphoBank Curator
Project Administrator

2854
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Taxonomic Overview for Matrix 'M29109' (70 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Atrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[2] † Eiratrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[3] † Askerina Last Modified in 01/10/23	3	38	38	0	0	0	0	1
[4] † Dihelictera Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[5] † Endrea Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[6] † Gotatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[7] † Joviatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[8] † Nottina Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[9] † Oglupes Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[10] † Procarinatina Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[11] † Protatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[12] † Rhinatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[13] † Sifella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[14] † Zygospiraella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[15] † Eospinatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[16] † Atrypina Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[17] † Gracianella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[18] † Clintonella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[19] † Alispira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[20] † Anabaria Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[21] † Athyrisinoides Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[22] † Beitaia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[23] † Nalivkinia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[24] † Rongatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[25] † Plectatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[26] † Bockeliena Last Modified in 01/10/23	1	40	40	0	0	0	0	1
[27] † Xanthea Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[28] † Spirigerina Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[29] † Australispira Last Modified in 01/10/23	1	40	40	0	0	0	0	1
[30] † Eospirigerina Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[31] † Pectenospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[32] † Qilianotryma Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[33] † Schachriomonia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[34] † Sulcatospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[35] † Atrypinella Last Modified in 01/10/23	2	39	39	0	0	0	0	1
[36] † Limbatrypa Last Modified in 01/10/23	2	39	39	0	0	0	0	1
[37] † Recticulatrypa Last Modified in 01/10/23	1	40	40	0	0	0	0	1
[38] † Anazyga Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[39] † Zygatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[40] † Zygospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[41] † Catazyga Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[42] † Pentlandella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[43] † Tuvaella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[44] † Lissatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[45] † Atrypellina Last Modified in 01/10/23	1	40	40	0	0	0	0	1
[46] † Atrypoidea Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[47] † Australina Last Modified in 01/10/23	2	39	39	0	0	0	0	1
[48] † Cerasinella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[49] † Cromatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[50] † Eisaella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[51] † Meifodia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[52] † Parmula Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[53] † Thulatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[54] † Septatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[55] † Becscia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[56] † Idiospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[57] † Webbyspira Last Modified in 01/10/23	1	40	40	0	0	0	0	1
[58] † Glassia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[59] † Protozyga Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[60] † Manespira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[61] † Xyslia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[62] † Cyclospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[63] † Rozmanospira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[64] † Kellerella Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[65] † Nikolaispira Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[66] † Zeravshania Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[67] † Davidsonia Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[68] † Eifelatrypa Last Modified in 01/10/23	0	41	41	0	0	0	0	1
[69] † Carinatina Last Modified in 01/10/23	2	39	39	0	0	0	0	1
[70] † Ancistrorhyncha Last Modified in 01/10/23	0	41	41	0	0	0	0	1

Project views

type	number of views	Individual items viewed (where applicable)
Total project views	4971
Project overview	272
Media views	913	Media search (673 views); M849324 (240 views);
Documents list	303
Matrix views	181	Matrix landing page (166 views); Matrix (15 views);
Taxon list	2481
Specimen list	400
Views for media list	242
Bibliography	179

Project downloads

type	number of downloads	Individual items downloaded (where applicable)
Total downloads from project	2
Project downloads	1
Matrix downloads	1	Matrix (1 download);