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A reexamination of Waikalasma (Cirripedia: Thoracica) and its significance in balanomorph phylogeny

Published online by Cambridge University Press:  14 July 2015

John S. Buckeridge  and
William A. Newman
John S. Buckeridge
Affiliation:
Carrington Polytechnic, Mount Albert, AK 3, New Zealand
William A. Newman
Affiliation:
Scripps Institution of Oceanography, La Jolla, California 92093
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Extract

When waikalasma was first recorded from early Miocene strata in New Zealand (Buckeridge, 1983) it was described as possessing eight compartmental plates but lacking basal whorls of imbricating plates. However, subsequent study and comparison of the holotype with extant Chionelasmus has shown that the remnants of several small plates remaining at the base of the rostrum represent the remains of two or three basal whorls (Figure 1). Furthermore, new evidence concerning the structure of the wall of the Chionelasmatinae has indicated not only that the true or median latus has been replaced by the carinolatus in balanomorphs, but that an additional or secondary carinolatus has been added in higher balanomorphs (Yamaguchi and Newman, 1990). The structure of the wall in Waikalasma can now be reinterpreted in light of these findings (Figure 2). It turns out, in terms of current phylogeny, that Waikalasma should be placed amongst the most primitive of the balanomorph barnacles, representing an important step in balanomorph evolution rather than simply an evolutionary offshoot as envisaged by Buckeridge (1983) and Foster and Buckeridge (1987) (Figure 3).

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 66 , Issue 2 , March 1992 , pp. 341 - 345
Copyright
Copyright © The Paleontological Society 

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References

Buckeridge, J. S. 1981. A Miocene turtle (Cheloniidae) from the lower Miocene of Port Waikato, New Zealand. New Zealand Journal of Geology and Geophysics, 24:435–437.Google Scholar
Buckeridge, J. S. 1983. Fossil barnacles (Cirripedia: Thoracica) of New Zealand and Australia. New Zealand Geological Survey Paleontological Bulletin, 50:1–151.Google Scholar
Burmeister, H. 1834. Beiträge zur Naturgeschichte der Rankenfüser (Cirripedia). G. Reimer, Berlin, 60 p.Google Scholar
Darwin, C. R. 1854. A monograph on the sub-class Cirripedia, with figures of all species. The Balanidae, &c. Ray Society, London, 684 p.Google Scholar
Foster, B. A. 1988. Tetrapachylasma: a new genus for a shallow water pachylasmatid barnacles from the Cook Islands. Crustaceana, 55:225–233.CrossRefGoogle Scholar
Foster, B. A., and Buckeridge, J. S. 1987. Barnacle palaeontology, p. 43–61. In Southward, A. J. (ed.), Barnacle Biology. Crustacean Issues, 5, Balkema, Rotterdam.Google Scholar
Lamarck, J. B. de. 1818. Histoire naturelle des animaux sans vertèbres 5. Paris, 612 p.Google Scholar
Newman, W. A. 1987. Evolution of cirripedes and their major groups, p. 3–42. In Southward, A. J. (ed.), Barnacle Biology. Crustacean Issues, 5, Balkema, Rotterdam.Google Scholar
Newman, W. A. 1989. Juvenile ontogeny and metamorphosis in the most primitive living sessile barnacle, Neoverruca, from an abyssal hydrothermal spring. Bulletin of Marine Science, 45:467–477.Google Scholar
Newman, W. A., and Hessler, R. R. 1989. A new abyssal hydrothermal verrucomorphan (Cirripedia; Sessilia): the most primitive living sessile barnacle. Transactions of the San Diego Society of Natural History, 21(16):259–273.Google Scholar
Pilsbry, H. A. 1916. The sessile barnacles (Cirripedia) contained in the collections of the U.S. National Museum. Bulletin of the U.S. National Museum, 93:1–366.Google Scholar
Withers, T. H. 1935. Catalogue of Fossil Cirripedia in the Department of Geology. 2 (Cretaceous). British Museum (Natural History), London, 535 p.Google Scholar
Woodward, H. 1901. On Pyrgoma cretacea, a cirripede from the Upper Chalk of Norwich and Margate. Geological Magazine, 8:145–152 (Erratum:240; Additional note:528).CrossRefGoogle Scholar
Yamaguchi, T., and Newman, W. A. 1990. A new and primitive barnacle (Cirripedia; Balanomorpha) from the North Fiji Basin abyssal hydrothermal field, and its evolutionary implications. Pacific Science, 44:135–155.Google Scholar
Zullo, V. A., Russell, E. E., and Mellon, F. F. 1987. Brachylepas Woodward and Virgiscalpellum Withers (Cirripedia) from the Upper Cretaceous of Arkansas. Journal of Paleontology, 61:101–111.Google Scholar