Question: Information: - The Jurassic (from Jura Mountains) is a geologic period and system that spans 56.3 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya. The Jurassic constitutes the middle period of the Mesozoic Era, also known as the Age of Reptiles. The start of the period is marked by the major TriassicJurassic extinction event. Two other extinction events occurred during the period: the Pliensbachian/Toarcian event in the Early Jurassic, and the Tithonian event at the end; however, neither event ranks among the "Big Five" mass extinctions. - In the geological timescale the Tithonian is the latest age of the Late Jurassic epoch or the uppermost stage of the Upper Jurassic series. It spans the time between 152.1 4 Ma and 145.0 4 Ma (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian stage (part of the Cretaceous). - The Cretaceous is a geologic period and system that spans 79 million years from the end of the Jurassic Period million years ago (Mya) to the beginning of the Paleogene Period Mya. It is the last period of the Mesozoic Era. The Cretaceous Period is usually abbreviated K, for its German translation "Kreide" (chalk). - In the geological timescale, the Berriasian is an age or stage of the Early Cretaceous. It is the oldest, or lowest, subdivision in the entire Cretaceous. It spanned the time between 145.0 4.0 Ma and 139.8 3.0 Ma (million years ago). The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian. - The Early Cretaceous/Middle Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 146Ma to 100 Ma. - The Hauterivian is, in the geologic timescale, an age in the Early Cretaceous epoch or a stage in the Lower Cretaceous series. It spans the time between 132.9 2 Ma and 129.4 1.5 Ma (million years ago). The Hauterivian is preceded by the Valanginian and succeeded by the Barremian. - The Barremian is an age in the geologic timescale (or a chronostratigraphic stage) between 129.4 1.5 Ma (million years ago) and 125.0 1.0 Ma). It is a subdivision of the Early Cretaceous epoch (or Lower Cretaceous series). It is preceded by the Hauterivian and followed by the Aptian stage. - In the geologic timescale , the Valanginian is an age or stage of the Early or Lower Cretaceous . It spans between 139.8 3.0 Ma and 132.9 2.0 Ma ( million years ago ) . The Valanginian stage succeeds the Berriasian stage of the Lower Cretaceous and precedes the Hauterivian stage of the Lower Cretaceous . After reading the paragraphs above, we are interested in knowing the entity with which 'valanginian' exhibits the relationship of 'subclass of'. Find the answer from the choices below. Choices: - age - chalk - cretaceous - early cretaceous - early jurassic - german - jurassic - late jurassic - name - series - stage - system - time - translation - triassic
Answer:
early cretaceous