Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 80
3 ( figs 2–3 ) ) is similar to Crioceratites ( C. ) australis sp . nov . in the very short
trituberculate stage on the inner whorls . Crioceratites ( C. ) binelli may also
develop constrictions on the outer whorls , as in Crioceratites ( C. ) australis ,
albeit ...
3 ( figs 2–3 ) ) is similar to Crioceratites ( C. ) australis sp . nov . in the very short
trituberculate stage on the inner whorls . Crioceratites ( C. ) binelli may also
develop constrictions on the outer whorls , as in Crioceratites ( C. ) australis ,
albeit ...
Page 81
Annale Van Die Suid-Afrikaanse Museum South African Museum. except that in
the latter coiling tends to become even closer and there is a reduction of
trituberculate ornamentation from the inner whorls outwards . It would seem
possible to ...
Annale Van Die Suid-Afrikaanse Museum South African Museum. except that in
the latter coiling tends to become even closer and there is a reduction of
trituberculate ornamentation from the inner whorls outwards . It would seem
possible to ...
Page 107
Sarkar ( 1955 ) believed that Acrioceras could be divided into four subgenera ,
based primarily on the mode of coiling , i.e. acrioceratid or aspinoceratid , and
whether major ribs , if present , are or are not trituberculate . His scheme is as
follows ...
Sarkar ( 1955 ) believed that Acrioceras could be divided into four subgenera ,
based primarily on the mode of coiling , i.e. acrioceratid or aspinoceratid , and
whether major ribs , if present , are or are not trituberculate . His scheme is as
follows ...
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Common terms and phrases
according Acrioceras Aguirre Urreta Ancyloceratinae appears Aspinoceras association australis sp authors Barremian bear BMNH body chamber Boreal ceras close coiling coiling Collignon 1962 compared compressed consists Crioceratites Cryptocrioceras described Description developed diameter dimorphism discussion distinct early elongated Emericiceras figured finely flanks followed forms genus Hemihoplites holotype illustrations Immel impression included inner whorls Italy Klinger known lateral lobe locality Lower material Menuthiocrioceras Museum Note occur ornament outer whorls Paracrioceras Patagonia possible preserved Realm recently referred regarded ribs Riccardi & Aguirre rounded Sarkar separate shaft shoulder shows similar single Sornayites South southern Spath specimens stage strong strongly subfamilies suggested suture synonym systematic tabarelli Astier taxonomic Tethyan Thieuloy Thomel trituberculate tubercles type species umbilical uncoiled Upper Upper Barremian variable venter ventral ventrolateral whorl section Wiedmann Wright yrigoyeni Leanza zone zulu sp Zululand
Bibliographic information
| Title | Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum Volume 101, Issue 5 of Annals of the South African Museum, South African Museum |
| Author | South African Museum |
| Publisher | South African Museum, 1992 |
| Original from | the University of California |
| Digitized | 21 Jul 2016 |
| ISBN | 0868131288, 9780868131283 |
| Export Citation | BiBTeX EndNote RefMan |