CICTERRA 20351
CENTRO DE INVESTIGACIONES EN CIENCIAS DE LA TIERRA
Unidad Ejecutora - UE
artículos
Título:
Testing phyllogenetic relationships of Floian (Ordovician) graptolite records from Argentina through cladistic analysis
Autor/es:
VENTO, BARBARA; TORO, BLANCA; MALETZ, JÖRG
Revista:
AMEGHINIANA
Editorial:
ASOCIACION PALEONTOLOGICA ARGENTINA
Referencias:
Lugar: Buenos Aires; Año: 2015 vol. 52 p. 517 - 534
ISSN:
0002-7014
Resumen:
The analysis of two-stiped dichograptids, largely of baltograptid and expansograptid taxa of the family Didymograptidae from theFloian of northwestern Argentina, provides insight into the evolutionary relationships of this group. The important proximal end charactersclearly cluster the baltograptids with the derived genera Didymograptus and Aulograptus. One of the analyses provides the information that thegenera Cymatograptus and Expansograptus share a common ancestor but are not closely related to the two-stiped Kiaerograptus and relatedtaxa. Likewise, with the exception of some controversial taxa, the families Tetragraptidae and Didymograptidae can be readily differentiated,supporting previous interpretations that they represent monophyletic clades. Although the present analyses are poorly supported, they providehypotheses that could be further tested based on new data on isolated dichograptid taxa based on isolated or relief-preserved material.
