Ceraurus is a genus of cheirurid trilobite of the middle and, much more rarely, the upper Ordovician. They are commonly found in strata of the lower Great Lakes region. These trilobites have eleven thoracic segments, a very small pygidium and long genal and pygidial spines. The taxonomy of the genus is problematic, as the many variations of eye placement, decoration patterns of pustules, and spine length call the genus' defining characteristics into question. Ceraurus may, in fact, be at least four genera: Ceraurus sensu stricto, and the genera, Gabriceraurus, Bufoceraurus and Leviceraurus.
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| - Ceraurus (en)
- Ceraurus (nl)
- Ceraurus (pl)
- 希若拉蟲 (zh)
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| - Ceraurus is een geslacht van cheiruride trilobieten van het Midden-, maar veel zeldzamer, het Boven-Ordovicium. (nl)
- Ceraurus – rodzaj stawonogów z wymarłej gromady trylobitów, z rzędu . Żył w okresie ordowiku i dewonu. (pl)
- 希若拉蟲(學名:Ceraurus)是生存在中奧陶紀至晚志留紀海洋中的一屬三葉蟲。其中模式種(Ceraurus pleurexanthemus)的頭部(Cephalon)有著長長的頰刺與細小的眼睛,胸部則分為11節,每節的末端都有著尖銳的棘刺,尾部也長有一對長長的尾刺,說明牠們是掠食性的物種。其化石分布於北美、英國、瑞典和中國等地。 (zh)
- Ceraurus is a genus of cheirurid trilobite of the middle and, much more rarely, the upper Ordovician. They are commonly found in strata of the lower Great Lakes region. These trilobites have eleven thoracic segments, a very small pygidium and long genal and pygidial spines. The taxonomy of the genus is problematic, as the many variations of eye placement, decoration patterns of pustules, and spine length call the genus' defining characteristics into question. Ceraurus may, in fact, be at least four genera: Ceraurus sensu stricto, and the genera, Gabriceraurus, Bufoceraurus and Leviceraurus. (en)
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| - Middle to Upper Ordovician (en)
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| - Fossil Ceraurus with baby. (en)
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| - Ceraurus is a genus of cheirurid trilobite of the middle and, much more rarely, the upper Ordovician. They are commonly found in strata of the lower Great Lakes region. These trilobites have eleven thoracic segments, a very small pygidium and long genal and pygidial spines. Ceraurus is quite common in the Ordovician of upstate New York, south-central and south-eastern Ontario, and the St. Lawrence Valley in Quebec, as well as in the Canadian Arctic. It and similar genera range in size from less than quarter an inch to well over five inches. Similar genera of trilobites occur in the Ordovician outcrops of the Volkhov River, near St. Petersburg, Russia. The taxonomy of the genus is problematic, as the many variations of eye placement, decoration patterns of pustules, and spine length call the genus' defining characteristics into question. Ceraurus may, in fact, be at least four genera: Ceraurus sensu stricto, and the genera, Gabriceraurus, Bufoceraurus and Leviceraurus. (en)
- Ceraurus is een geslacht van cheiruride trilobieten van het Midden-, maar veel zeldzamer, het Boven-Ordovicium. (nl)
- Ceraurus – rodzaj stawonogów z wymarłej gromady trylobitów, z rzędu . Żył w okresie ordowiku i dewonu. (pl)
- 希若拉蟲(學名:Ceraurus)是生存在中奧陶紀至晚志留紀海洋中的一屬三葉蟲。其中模式種(Ceraurus pleurexanthemus)的頭部(Cephalon)有著長長的頰刺與細小的眼睛,胸部則分為11節,每節的末端都有著尖銳的棘刺,尾部也長有一對長長的尾刺,說明牠們是掠食性的物種。其化石分布於北美、英國、瑞典和中國等地。 (zh)
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