Morphobank

Project 4772: B. Michaux. 1989. Cladograms can reconstruct phylogenies: an example from the fossil record. Alcheringa: An Australasian Journal of Palaeontology. 13 (1):21-36.

Specimen: † Ancillista velesiana (unvouchered)
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Abstract

A phylogenetic analysis of Recent and fossil species of the genus Amalda (Gastropoda) was undertaken. The resulting cladogram is compared with the phylogeny implied by stratigraphic evidence. The two phylogenies are in broad agreement, and both suggest that the subgenus Alocospira should be elevated to generic rank. The status of the subgenus Gracilispira is uncertain on both cladistic and stratigraphic grounds. Of the two remaining subgenera, only Baryspira is unequivocally monophyletic. Gemaspira and Baryspira are sister taxa in the cladistic analysis. However, stratigraphic evidence strongly suggests that Gemaspira is a paraphyletic group. The implied sister-group relationship is interpreted as resulting from coding procedures which assumed no transformation series between states of a multistate character. Clearly, stratigraphic evidence implies that the synapomorphies linking Baryspira spp. are transformations from (rather than being independent of) the synapomorphies linking Gemaspira spp. This underlines the importance of deducing the correct transformations linking multistate characters in attempting to reconstruct phylogenies. In this case the transformation series implied are counter-intuitive. It is concluded that cladistic analysis of morphological characters has the potential to reconstruct phylogenies provided the correct transformation series are known. These, it is argued, can be obtained through a study of the dynamics of form development.

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Article DOI: 10.1080/03115518908619123

Project DOI: 10.7934/P4772, http://dx.doi.org/10.7934/P4772

This project contains	Matrices
2 Media 1 Matrix 1 Document 33 Taxa 1 Specimen 37 Characters Total size of project's media files: 1.41M Download Project SDD File	Total scored cells: 1213 Total media associated with cells: 0 Total labels associated with cell media: 0
	Characters
	Total characters: 37 Total characters with associated media: 0 Total characters with media with labels: 0 Total character states: 129 Total character states with associated media: 0 Total character states with media with labels:0 Total unordered/ordered characters:37/0

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MorphoBank Project 4772

Creation Date:
24 July 2023
Publication Date:
27 March 2024

Authors' Institutions

University of Auckland

Members

Shreya Jariwala
Project Administrator

1213
(1213, 0, 0)

Taxonomic Overview for Matrix 'M29742' (33 Taxa)

taxon	unscored cells	scored cells	no cell support	NPA cells	"-" cells	cell images	labels on cell images	member access
[1] † Gracilispira morgani Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[2] † Gracilispira rimuensis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[3] † Gracilispira gigartoides Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[4] † Gracilispira wairarapaensis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[5] † Gracilispira brevicula Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[6] † Gracilispira exsputa Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[7] † Gracilispira novaezelandiae Taxon name last Modified on 03/26/24	0	39	37	0	0	0	0	1
[8] † Gracilispira benthicola Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[9] † Alocospira n. sp. Taxon name last Modified on 03/27/24	1	36	36	0	0	0	0	1
[10] † Alocospira hebera Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[11] † Alocospira subhebera Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[12] Alocospira cuppedia Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[13] † Baryspira australis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[14] † Baryspira depressa Taxon name last Modified on 03/26/24	1	36	36	0	0	0	0	1
[15] † Baryspira mucronata Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[16] † Baryspira oraria Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[17] † Baryspira erica Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[18] † Baryspira gladiolaria Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[19] † Baryspira bathami Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[20] † Gemaspira robusta Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[21] † Gemaspira paltycephala Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[22] † Gemaspira pristina Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[23] † Gemaspira macbeathi Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[24] † Gemaspira tirangiensis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[25] † Gemaspira waikaiaensis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[26] † Spinaspira stortha Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[27] † Spinaspira cingulata Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[28] † Spinaspira spinigera Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[29] † Spinaspira tholaculus Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[30] † Spinaspira pakaurangiensis Taxon name last Modified on 03/26/24	0	37	37	0	0	0	0	1
[31] † Turrancilla apicalis Taxon name last Modified on 03/26/24	3	34	34	0	0	0	0	1
[32] † Ancillista velesiana Taxon name last Modified on 03/26/24	4	33	33	0	0	0	0	1
[33] † Turrancilla apicalis.2 Taxon name last Modified on 03/26/24	1	36	36	0	0	0	0	1