Hostname: page-component-848d4c4894-ndmmz Total loading time: 0 Render date: 2024-04-30T11:00:58.261Z Has data issue: false hasContentIssue false
  • English
  • Français

Phyletic evolution in the Globorotalia crassaformis (Galloway and Wissler) lineage: a preliminary report

Published online by Cambridge University Press:  08 April 2016

Anthony J. Arnold
Anthony J. Arnold*
Affiliation:
Museum of Comparative Zoology, Harvard University, Cambridge, Massachusetts 02138
Get access Rights & Permissions [Opens in a new window]

Abstract

A preliminary report is presented documenting the evolution of the Globorotalia crassaformis (Galloway and Wissler) lineage from the Early Pliocene G. cibaoensis (Bermudez) in Hydraulic Piston Core 72/516 on the Rio Grande Rise (western South Atlantic). A new technique, eigenshape analysis, is used to describe the gross changes in morphology, and the use of “Raupian” analysis of expansion rates, angular displacement, position relative to coiling axis, and translation rates of chambers is suggested as a useful vehicle for inferring the geometric causes of observed evolutionary changes. These changes include size increase, decrease in the number of chambers per whorl, inflation, reduction of relative height of aperture, and increase in the peripheral angle. The sequence is judged to be an example of phyletic gradualism.

Type
Articles
Information
Paleobiology , Volume 9 , Issue 4 , Fall 1983 , pp. 390 - 397
Copyright
Copyright © The Paleontological Society 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Arnold, A. J. 1982. Techniques for biometric analysis of foraminifera. In: Mamet, B. and Copeland, M. J., eds. Proc. 3d No. Am. Paleontol. Conv. 1:13–15.Google Scholar
Bé, A. W. H., Jongeblood, W. L., and McIntyre, A. 1969. X-ray microscopy of Recent planktonic foraminifera. J. Paleontol. 43:1384–1396.Google Scholar
Berger, W. H. 1969. Planktonic foraminifera: basic morphology and ecologic implications. J. Paleontol. 43:1369–1383.Google Scholar
Berggren, W. A. 1969. Rates of evolution in some Cenozoic planktonic foraminifera. Micropaleontology. 15(3):351–365.Google Scholar
Berggren, W. A. 1977a. Late Neogene planktonic foraminiferal biostratigraphy of DSDP Site 357 (Rio Grande Rise). In: Supko, P. R. et al., eds. Initial Reports of the Deep Sea Drilling Project. 39:591–614.Google Scholar
Berggren, W. A. 1977b. Late Neogene Planktonic foraminiferal biostratigraphy of the Rio Grande Rise (South Atlantic). Mar. Micropaleontol. 2(3):265–313.CrossRefGoogle Scholar
Blow, W. H. 1979. The Cainozoic Globigerinida. Vols. 1-3. E. J. Brill; Leiden.Google Scholar
Dinesen, A. 1974. The growth spiral in some planktonic foraminifera from the Eocene of Denmark. D.G.U. arbog 1974, pp. 105–138.Google Scholar
Gould, S. J. 1982. The meaning of punctuated equilibrium and its role in validating a hierarchical approach to macroevolution. Pp. 83–104. In: Milkman, R., ed. Perspectives on Evolution. Sinauer; Sunderland, Mass.Google Scholar
Kennett, J. P. 1966. The Globorotalia crassaformis bioseries in N. Westland and Marlborough, New Zealand. Micropaleontol. 12:235–245.Google Scholar
Lipps, J. H. 1981. What, if anything, is micropaleontology? Paleobiology. 7(2):167–199.Google Scholar
Lohmann, G. P. 1982. Eigenshape analysis of microfossils: a general morphometric procedure for describing changes in shape. J. Math. Geol. (in press).Google Scholar
Malmgren, B. A. and Kennett, J. P. 1981. Phyletic gradualism in a Late Cenozoic planktonic foraminiferal lineage; DSDP Site 284, southwest Pacific. Paleobiology. 7(2):230–240.Google Scholar
McGhee, G. 1980. Shell form in the bivalvia and brachiopoda: a geometric analysis. Paleobiology. 6(1):71–76.Google Scholar
Olsson, R. K. 1971. The logarithmic spire in planktonic foraminifera; its use in taxonomy, evolution, and paleoecology. Trans. Gulf Coast Assoc. Geol. Soc. 21:419–432.Google Scholar
Raup, D. M. 1966. Geometric analysis of shell coiling: general problems. J. Paleontol. 40(5):1178–1190.Google Scholar
Thompson, D. W. 1942. On Growth and Form. Macmillan; New York.Google Scholar