This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
Current identification/main database link: Schackoina Thalmann 1932
See also: Siderolina cenomana - type species;
Original Description
1. Kreide. Die wohl am primitivsten ausgebildeten Hantkenina- Arten sind die beiden einzigen bisher aus kretazischen Schichten bekannt gewordenen:
Hantkenina cenomana (Schacko 1896) und
Hantkenina multispinata Cushman el Wickenden 1930.
....
Diese beiden primitiven Hantkenina-Arten der Kreide weichen in mehrfacher Beziehung vom Genotyp aus dem Obereozän ab (geringere Kammerzahl bei H. cenomana; abweichender polyhedrischer Schalenbau, primitive schwach-bogenförmig geformte Mündung sowie zahlreichere unregelmässig-angeordnete tubulösc „Stacheln" bei H. multispinata). Diese Unterscheidungsmerkmale scheinen es zu rechtfertigen, die kretazischen Arten einem neuen Subgenus Schackoina zuzuweisen, mit Subgenotyp: Hantkenina (Schackoina) cenomana (Schacko 1896).
Schackoina compiled by the pforams@mikrotax project team viewed: 14-10-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=132216 Go to Archive.is to create a permanent copy of this page - citation notes |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments