Antitropicality and convergent evolution: a case study of Permian neospiriferine brachiopods

Lee, Sangmin, Shi, G.R., Park, Heeju and Tazawa, Jun-Ichi 2016, Antitropicality and convergent evolution: a case study of Permian neospiriferine brachiopods, Palaeontology, vol. 59, no. 1, pp. 109-138, doi: 10.1111/pala.12213.

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Title Antitropicality and convergent evolution: a case study of Permian neospiriferine brachiopods
Author(s) Lee, SangminORCID iD for Lee, Sangmin
Shi, G.R.
Park, Heeju
Tazawa, Jun-Ichi
Journal name Palaeontology
Volume number 59
Issue number 1
Start page 109
End page 138
Total pages 30
Publisher Wiley
Place of publication London, Eng.
Publication date 2016-01
ISSN 1475-4983
Keyword(s) antitropical distribution
morphological convergence
Summary Antitropical distribution is a biogeographical pattern characterized by natural occurrences of the same species or members of the same clade in the middle- or middle-to-high-latitudinal habitats of both hemispheres, either on land or in marine environments, without appearing in the intervening tropical environments. For most of the noted examples of Permian antitropical distribution, particularly in marine invertebrates, the causes of disjunctions have been mainly linked to either dispersal or vicariance models. Little attention has been paid to other possible mechanisms. This study investigated the antitropicality of some Permian neospiriferine brachiopods through detailed taxonomic revision, comparison of palaeobiogeographical distribution, and a phylogenetic analysis. Several species, previously assigned to Kaninospirifer, are here reassigned to other genera, especially to Fasciculatia in the northern hemisphere and to Quadrospira in the southern hemisphere during the Permian. Both Kaninospirifer and Fasciculatia appear to have been restricted to north-western Pangea and north-eastern Asia during the Permian, but there is no robust evidence to suggest their presence in the southern hemisphere to which Imperiospira and Quadrospira were confined. In spite of the distributional separation between the two pairs of neospiriferine genera in the Permian palaeobiogeographical regime, they share considerable numbers of morphological characters, such as a large shell, subdued fasciculation, and reduction of ventral adminicula. Notwithstanding these morphological similarities, our phylogenetic reconstruction of the neospiriferines does not support a close relationship between these genera. This therefore must indicate that these similar morphological features were independently acquired, probably with these taxa living in spatially separate but ecologically compatible environmental conditions in the mid-latitudinal area of each hemisphere during the Permian. We regard this as an example of convergent evolution.
Language eng
DOI 10.1111/pala.12213
Field of Research 060206 Palaeoecology
060306 Evolutionary Impacts of Climate Change
0403 Geology
0602 Ecology
0603 Evolutionary Biology
Socio Economic Objective 970104 Expanding Knowledge in the Earth Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Palaeontological Association
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