Ammonites
Definition
The plural form of amonit; an extensive group of fossil marine cephalopod mollusks characterized by chambered spiraled shells, similar to the modern nautilus. In historical geology, these representatives serve as essential index fossils for delineating and dating sedimentary biozones of past eras, providing clues about prehistoric ocean climate and dynamics.
Bilingual Equivalents
- Ammonites
- Fossil ammonoids
Grammatical & Source Details
| Inflection Type | Masculine noun, regular plural variation widely adjusted across global geological indices. |
| Formation | Standard masculine linguistic pluralization based on the root scientific form 'ammonite'. |
| Spelling / Pronunciation | [a.mo.ˈnit͡s] |
| Source | Global Lexicon of Sedimentology and Prehistoric Life Matrices |
Contextual Usage Examples
RO: Colecția muzeului include sute de amoniți adunați din sedimentele calcaroase ale Carpaților.
EN: The museum's collection includes hundreds of ammonites gathered from the calcareous sediments of the Carpathians.
RO: Acești amoniți permiteau cercetătorilor să stabilească vârsta rocilor fără a recurge la analize radiometrice scumpe.
EN: These ammonites allowed researchers to establish the age of rocks without resorting to expensive radiometric analyses.
RO: Datorită structurii lor rezistente, mulți amoniți s-au conservat perfect prin procesul de piroliză sau calcitizare.
EN: Due to their resistant structure, many ammonites preserved perfectly through the process of pyrolyzation or calcitization.
Idioms & Phrases
Faună de amoniți / Ammonite fauna
RO: Asociație biologică marină istorică dominată de diverse genuri de cefalopode cu cochilie înveliș dur.
EN: An ancient marine biological association dominated by various genera of hard-shelled cephalopods.
Zone cu amoniți / Ammonite zones
RO: Subdiviziuni biostratigrafice clare stabilite în teren pe baza apariției și dispariției unor specii reper.
EN: Clear biostratigraphic subdivisions established in the field based on the appearance and disappearance of marker species.
Cochilii de amoniți / Ammonite shells
RO: Structuri aragonitice fosilizate organizate în camere interne succesive folosite de animal pentru controlul hidrodinamic.
EN: Fossilized aragonitic structures organized into successive internal chambers used by the animal for hydrodynamic control.
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