Alveolina
Definition
A genus of large fossil marine foraminifera, characteristic of the Late Cretaceous and Eocene periods, having a spherical, ellipsoidal, or fusiform calcareous shell structurally divided into numerous small chambers or alveoli; a microfossil belonging to this genus. These organisms represent essential index fossils for dating sedimentary geological layers and reconstructing ancient tropical marine environments.
Bilingual Equivalents
- Alveolina
Grammatical & Source Details
| Inflection Type | Feminine noun, regular morphological inflection in singular and plural variations used in scientific taxonomies. |
| Formation | Scientific neologism adapted from the modern Latin genus name, rooted in the structural cell pattern of the shell. |
| Spelling / Pronunciation | [al.ve.o.ˈli.nə] |
| Source | Handbook of Micropaleontology, Invertebrate Fossils and Sedimentary Biostratigraphy |
Contextual Usage Examples
RO: Geologul a identificat mai multe exemplare de alveolină în eșantionul de calcar extras din cariera montană.
EN: The geologist identified several specimens of alveolina in the limestone sample extracted from the mountain quarry.
RO: Prezența masivă a acestui gen de alveolină indică faptul că rocile sedimentare s-au format într-o mare caldă și puțin adâncă.
EN: The massive presence of this alveolina genus indicates that the sedimentary rocks were formed in a warm and shallow sea.
RO: Studiul microscopic detaliat al unei secțiuni prin alveolină a dezvăluit dispunerea simetrică a lojelor interne.
EN: The detailed microscopic study of a section through the alveolina revealed the symmetrical arrangement of the internal chambers.
Idioms & Phrases
Calcar cu alveoline / Alveolina limestone
RO: Rocă sedimentară calcaroasă compusă structural într-o proporție mare din cochiliile fosilizate ale acestor foraminifere.
EN: A calcareous sedimentary rock structurally composed in a high proportion of the fossilized shells of these foraminifera.
Genul Alveolina / Alveolina genus
RO: Categorie taxonomică de protozoare marine fosile utilizată frecvent în corelările biostratigrafice globale.
EN: A taxonomic category of fossil marine protozoans frequently used in global biostratigraphic correlations.
Cochilie de alveolină / Alveolina test
RO: Înveliș protector mineralizat al organismului preistoric, caracterizat printr-o rețea complexă de septuri și microcompartimente.
EN: The mineralized protective shell of the prehistoric organism, characterized by a complex network of septa and microcompartments.
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