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Species Paragloborotalia mayeri Cushman & Ellisor 1939


Discussion / Comments:
Chaisson & Leckie (1993):
Remarks: Globorotalia semivera is included under this species concept because of the highly gradational nature of these forms in the lower Miocene (see Leckie et al., this volume). Assignment to the genus Paragloborotalia is based on Spezzaferri's (1991) classification of the spinose "opima" group and derivation of Paragloborotalia mayeri from the "opima" group cf. Kennett and Srinivasan (1983). However, no spine holes where observed upon SEM examination of several specimens. In samples where this was the dominant species, it represented a larger percentage of the assemblage than did any other large species through the entire record at this site. Similar species: See Globorotalia challengeri. Neogloboquadrina continuosa is similar to P. mayeri, but it only has four chambers in the final whorl. P. mayeri is distinquished from Globorotalia peripheroronda by its more inflated chambers and higher arched aperture.
Systematics:

1
 Superregnum Eukaryota
  Regnum Protoctista
   Phylum Ciliophora
    Subphylum Postciliodesmatophora
     Ordo Globigerinida
      Superfamilia Globorotaliaceae
       Superfamilia Nonionacea
        Familia Globorotaliidae
         Genus Paragloborotalia
          Species Paragloborotalia mayeri
Synonym list:
Chaisson & d'Hondt (2000):
1939 Globorotalia mayeri Cushman & Ellisor. - Cushman & Ellisor : p.11 pl 2 figs 4a-c
1939 Globorotalia siakensis Le Roy. - Le Roy : p.262 pl 4 figs 20-22
1983 Globorotalia (Jenkinsella) mayeri Cushman & Ellisor. - Kennett & Srinivasan : p.174 pl 43 figs 4-6
1983 Globorotalia (Jenkinsella) siakensis Le Roy. - Kennett & Srinivasan : p.172 pl 42 figs 1, 6-8
Chaisson & Pearson (1997):
1939 Globorotalia mayeri Cushman & Ellisor. - Cushman & Ellisor : p.11 pl. 2; fig. 4a-c
1939 Globorotalia siakensis Le Roy. - LeRoy : p.262 pl. 4; fig. 20-22
1983 Globorotalia (Jenkinsella) mayeri Cushman & Ellisor. - Kennett & Srinivasan : p.174 pl. 43; fig. 4-6
1983 Globorotalia (Jenkinsella) siakensis Le Roy. - Kennett & Srinivasan : p.172 pl. 42; fig. 1, 6-8
Chaisson & Leckie (1993):
1939 Globorotalia mayeri Cushman & Ellisor. - Cushman & Ellisor : p.11 pl. 2; fig. 4a-c
1939 Globorotalia siakensis Le Roy. - LeRoy : p.262 pl. 4; fig. 20-22
1983 Globorotalia (Jenkinsella) mayeri Cushman & Ellisor. - Kennett & Srinivasan : p.174 pl. 43; fig. 4-6
1983 Globorotalia (Jenkinsella) siakensis Le Roy. - Kennett & Srinivasan : p.172 pl. 42; fig. 1 and 6-8
1993 Paragloborotalia mayeri Cushman & Ellisor. - Chaisson & Leckie : p.176 pl. 8; fig. 16-20
Stratigraphy - absolute ages:
LAD: 10.49 ± 0 [Ma], Chaisson & Pearson (1997) ODP Leg 154 Site 925
LAD: 10.43 ± 0 [Ma], Turco et al. (2002) ODP Leg 154 Site 926
References:

Le Roy,L.W. (1939):
Some small foraminifers, ostracoda and otoliths from the Neogene ("Miocene") of the Rokan-Tapanoeli area, Central Sumatra. . Natuurk. Tijdschr. Nederl. Indie Vol. 99

LeRoy,L.W.. (1939):
Some small foraminifera, Ostracoda and otoliths from the Neogene ("Miocene") of the Rokan-Tapanoeli area, central Sumatra . Natuurk. Tijdschr. Nederl.-lndie, Vol. 99(6) p. 215-296

Cushman,J.A. and Ellisor,A.C. (1939):
New species of foraminifers from the Oligocene and Miocene . Cushman Lab. Foraminiferal Res. Contrib. Vol. 15(1) p. 1-14

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Chaisson,W.P. and Leckie,R.M. (1993):
High-Resolution Planktonic Foraminifer Biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific).
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 130 Eds: Berger, W.H.Kroenke, L.W..Mayer, L.A..et al. p. 137-178

Chaisson,W.P. and Pearson,P.N. (1997):
Planktonic foraminifer biostratigraphy at Site 925: middle Miocene–Pleistocene.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 154 Eds: Shackleton, N.J.Curry, W.B.Richter, C.Bralower, T.J.

Chaisson,W.P. and d'Hondt,S.L. (2000):
Neogene planktonic foraminifer biostratigraphy at Site 999, Western Caribbean Sea.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 165 Eds: Leckie, R.M.Sigurdsson, H.Acton, G.D.Draper, G. p. 19-56

Turco,E.; Bambini,A.M.; Foresi,L.; Iaccarino,S.; Lirer,F.; Mazzei,R. and Salvatorini,G. (2002):
Middle Miocene high-resolution calcareous plankton biostratigraphy at Site 926 (Leg 154, equatorial Atlantic Ocean): palaeoecological and palaeobiogeographical implications . GeobiosMemoire spec. 24 p. 257-276
Anonymous: Unedited TaxonConcept data
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