Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 75
... synchronous ) phylogenetic development within Crioceratites leading to similar
, strongly tuberculate on the inner whorls , yet geographically distinct lineages ,
e.g. Paracrioceras in the Boreal , and Emericiceras in the Tethyan Realm .
... synchronous ) phylogenetic development within Crioceratites leading to similar
, strongly tuberculate on the inner whorls , yet geographically distinct lineages ,
e.g. Paracrioceras in the Boreal , and Emericiceras in the Tethyan Realm .
Page 81
This specimen has very strongly trituberculate major ribs and we are not sure
why Collignon did not refer this specimen to Menuthiocrioceras as well . This
specimen is , to all appearances , identical to the inner whorls of ' Cryptocrioceras
...
This specimen has very strongly trituberculate major ribs and we are not sure
why Collignon did not refer this specimen to Menuthiocrioceras as well . This
specimen is , to all appearances , identical to the inner whorls of ' Cryptocrioceras
...
Page 114
Tubercle strength varies from mere swellings to marked , sharp excrescences .
As size increases , there is a tendency towards a pattern of a strongly tuberculate
rib followed by three to five weakly tuberculate ribs . In a few cases a pair of flank
...
Tubercle strength varies from mere swellings to marked , sharp excrescences .
As size increases , there is a tendency towards a pattern of a strongly tuberculate
rib followed by three to five weakly tuberculate ribs . In a few cases a pair of flank
...
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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 |