Absolute and relative abundances of benthic marine Ostracoda collected from the lower Pliocene succession of the Bonares-Casa del Pino (Spain).

This dataset presents the ostracod countings from ten samples collected from the Arenas de Huelva Formation (Spain). They are presented as the absolute and relative abundances of ostracods, calculated using both the Minimum Number of Individuals (MNI) and the Total Number of Valves (TNV), with juvenile specimens indicated where applicable. The dataset was used to calculate the Specific Population Stage (SPS) index, as defined by Aiello et al. (2024a), that is calculated according to the following formula: SPS = [(IA-8×1)+(IA-7×2)+(IA-6×3)+(IA-5×4)+(IA-4×5)+(IA-3×6)+(IA-2×7)+(IA-1×8)+(IA×9)] / [1 + (IA-8+IA-7+IA-6+IA-5+IA-4+IA-3+IA-2+IA-1+IA)] where IA represents the number of adult instars of the considered species, IA-1 the number of penultimate instars, and so forth. The sediment samples were collected from the 6 m-thick lower Pliocene succession of the Bonares-Casa del Pino (CP) Section for ostracod assemblage analysis. The dataset could be used to compare the SPS index of other benthic marine ostracod assemblages.本数据集收录了采自西班牙韦尔瓦平原组（Arenas de Huelva Formation）的10个介形类（ostracod）样品的个体统计数据，以介形类的绝对丰度与相对丰度形式呈现，计算时同时采用最小个体数（Minimum Number of Individuals, MNI）与壳瓣总数（Total Number of Valves, TNV）两种方法，并视情况标注幼年标本。 本数据集曾用于计算由Aiello等人（2024a）定义的特定种群阶段（Specific Population Stage, SPS）指数，其计算公式如下： SPS = [(IA-8×1)+(IA-7×2)+(IA-6×3)+(IA-5×4)+(IA-4×5)+(IA-3×6)+(IA-2×7)+(IA-1×8)+(IA×9)] / [1 + (IA-8+IA-7+IA-6+IA-5+IA-4+IA-3+IA-2+IA-1+IA)] 其中IA代表目标物种的成虫龄期数，IA-1代表倒数第二龄期数，以此类推。 沉积物样品采自博纳雷斯-德尔皮诺之家（Bonares-Casa del Pino, CP）剖面6米厚的上新世早期沉积序列，用于介形类组合分析。本数据集可用于对比其他底栖海相介形类组合的SPS指数。