Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 98
The whorl section is typically compressed , trapezoidal , with a broad dorsum ,
broadly rounded umbilical shoulders , flattened convergent flanks , rather
narrowly rounded ventrolateral shoulders , and flattened venter . The greatest
breadth is ...
The whorl section is typically compressed , trapezoidal , with a broad dorsum ,
broadly rounded umbilical shoulders , flattened convergent flanks , rather
narrowly rounded ventrolateral shoulders , and flattened venter . The greatest
breadth is ...
Page 110
The whorl section of the early spiral varies from compressed in C80005c to
depressed in PCZ8443 ( Figs 28A , 30A - D ) . The dorsum is slightly concave .
Ornament on the spire and shaft is extremely variable . At one extreme , as
represented ...
The whorl section of the early spiral varies from compressed in C80005c to
depressed in PCZ8443 ( Figs 28A , 30A - D ) . The dorsum is slightly concave .
Ornament on the spire and shaft is extremely variable . At one extreme , as
represented ...
Page 114
All ribs are broad and low and feebly convex across the venter . Less
compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and
with a distinct rursiradiate style and stronger suggestion of a lower ventrolateral
tubercle .
All ribs are broad and low and feebly convex across the venter . Less
compressed forms , such as C80005a ( Fig . 26C ) , are more robustly ribbed and
with a distinct rursiradiate style and stronger suggestion of a lower ventrolateral
tubercle .
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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 |