Protohadros (original) (raw)
Protohadros („první hadrosaurid“) byl rod iguanodontního dinosaura z křídového období (věk cenoman nebo turon, asi před 95 až 90 miliony let). Fosilie tohoto býložravého ptakopánvého dinosaura byly objeveny v roce 1994 v Texasu (USA).
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| dbo:abstract | Protohadros („první hadrosaurid“) byl rod iguanodontního dinosaura z křídového období (věk cenoman nebo turon, asi před 95 až 90 miliony let). Fosilie tohoto býložravého ptakopánvého dinosaura byly objeveny v roce 1994 v Texasu (USA). (cs) Protohadros (meaning "first hadrosaur") is a genus of herbivorous ornithischian dinosaur from the Late Cretaceous (Cenomanian stage). Gary Byrd, a part-time palaeontologist, discovered some remains of this euornithopod (ribs and an ungual) during early 1994 at Flower Mound, Denton County, north-central Texas. He informed professional palaeontologist of the find, who arranged for the entire preserved fossil to be excavated. It was first reported upon in 1996 by of the Dedman College of Humanities and Sciences, Southern Methodist University. The type species Protohadros byrdi was described and named by Head in 1998. The genus name is derived from Greek πρῶτος, protos, "first", en ἁδρός, hadros, "thick", a reference to the fact that Head considered the species the oldest known hadrosaur. The specific name honours Byrd. The holotype, specimen SMU 74582, of Protohadros, was found in the Woodbine Formation, which dates to the middle Cenomanian. It consists of a partial skull, pieces of ribs, a hand ungual and a neural arch. In 1997 Lee named possible tracks of Protohadros as the ichnospecies Caririchnium protohadrosaurichnos. Due to the paucity of the remains much of the reconstruction of this dinosaur is speculative. The skull is about seventy centimetres long. From this Head estimated the length of the type specimen of Protohadros at seven to eight metres. He pointed out that this specimen was that of a subadult and that fully-grown individuals could have been longer. Protohadros had a massive, very deep set of lower jaws, and the snout was strongly turned down at the front, which according to Head suggested a habit of grazing on low-growing plants, rather than browsing from bushes or overhanging branches. Its diet would then have consisted of the swamp plants which grew in the delta streams in its habitat, scooped up by the broad, down-turned mouth. In some respects Protohadros was intermediate in morphology to more derived hadrosaurids. Like these it did have pleurokinesis, a cranial joint system that produced the food-grinding action, but only partially in that the quadrate at the back of the skull was still relatively immobile. Protohadros' rear legs were probably longer than the front pair, and it could move on all fours or walk and run on its hind legs only. Protohadros was first described as the most basal member of the Hadrosauridae, hence its generic name. However, scientific opinion has since changed and it is now regarded as a non-hadrosaurid iguanodontian, a basal member of the Hadrosauroidea, though one closely related to the Hadrosauridae. The dinosaur's discovery conflicted with the idea that hadrosaurids evolved in Asia, but its reassessment as a less-derived iguanodontian has rendered this discrepancy less problematic. (en) Protohadros byrdi Protohadros Genre † Protohadros, 1998 Espèce † Protohadros byrdi, 1998 Protohadros est un genre éteint de dinosaures ornithopodes appartenant à la super-famille des Hadrosauroidea. Il vivait en Amérique du Nord, au début du Crétacé supérieur, au Cénomanien, soit il y a environ entre 100,5 et 93,9 millions d'années. Une seule espèce est connue : Protohadros byrdi, décrite par en 1998. L'holotype de cette espèce est un ensemble de fossiles incluant un crâne partiel, des fragments de côtes, une griffe de main et une arche neurale de vertèbre. Il a été découvert dans la formation géologique de , dans le comté de Denton au Texas.Des empreintes de pas fossilisées, pouvant appartenir à un Protohadros byrdi ont été découvertes en 1997 et décrite sous le nom binominal d'ichnoespèce . (fr) Protohadros is een geslacht van plantenetende ornithischische dinosauriërs behorend tot de groep van de Euornithopoda dat tijdens het late Krijt leefde in het gebied van het huidige Texas. De enige benoemde soort is Protohadros byrdi. (nl) Protohadros (Protohadros byrdi) – roślinożerny dinozaur z nadrodziny hadrozauroidów (Hadrosauroidea); jego nazwa znaczy "pierwszy hadrozaur". Żył w późnej kredzie (ok. 100-94 mln lat temu) na terenach Ameryki Północnej. Długość ciała ok. 5-6 m, wysokość ok. 1,8-2 m, masa ok. 500 kg. Jego szczątki znaleziono w USA (w stanie Teksas). (pl) Protohadros (лат.) — род травоядных орнитоподовых динозавров надсемейства Hadrosauroidea из мела Северной Америки. Типовой и единственный вид Protohadros byrdi назван и описан американским палеонтологом Джейсоном Хэдом в 1998 году. Название рода образовано из приставки прото-, указывающей на первичность (от дневнегреческого слова «protos», означающее «первый»), и греческого слова «hadros», указывающее на семейство Hadrosauridae. По замыслу автора название Protohadros отражает филогенетический статус динозавра. Видовое имя дано в честь палеонтолога-любителя Гэри Бёрда, нашедшего останки динозавра и оказывавшего помощь в раскопках и анализе образцов, а также за его вклад в палеонтологию формации Woodbine. (ru) 始鴨嘴龍（屬名：Protohadros）意為“第一種鴨嘴龍類”，又名原鴨嘴龍，是晚白堊紀（森諾曼階）恐龍的一屬。始鴨嘴龍屬於禽龍類，是存活到很晚的原始鴨嘴龍類。牠們的化石發現於德州。模式種是伯德氏始鴨嘴龍（P. byrdi），由Jason Head在1998年所敘述、命名。 在1994年，一位業餘古生物學家Gary Byrd在德州登頓郡Flower Mound市發現了這種鴨嘴龍類。牠們由南衛理公會大學的Jason Head所命名、敘述。始鴨嘴龍生存於9,500萬年前，比大部分其他鴨嘴龍類還早，使牠們成為已知最古老的鴨嘴龍類，並成為鴨嘴龍類祖先候選者之一。在發現始鴨嘴龍之前，鴨嘴龍類的祖先被認為是位在亞洲的類似禽龍類恐龍。始鴨嘴龍的發現讓焦點轉向北美洲。 自從發現始鴨嘴龍的化石後，包括部分頭顱骨、部份肋骨、以及腳部骨頭，許多始鴨嘴龍的重建圖是根據想像的。始鴨嘴龍身長6公尺，擁有許多鴨嘴龍類特徵。牠們可能有大而深的頜部，嘴部前方有典型的缺乏牙齒鴨嘴，臉頰有大量、成排的咀嚼用牙齒，可壓碎堅硬的植物。如同較晚的鴨嘴龍類，始鴨嘴龍的後腿可能較前肢長，當吃地面植物或矮樹時可以用四肢行走，也可以在行走或奔跑時只使用二足。在晚白堊紀早期，始鴨嘴龍居住的地區是一片矮森林與沼澤，氣候是溫暖、潮濕，提供始鴨嘴龍充足的植被。 (zh) |
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| dbp:authority | Head, 1998 (en) |
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| dbp:fossilRange | Late Cretaceous, (en) |
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| dbp:taxon | Protohadros (en) |
| dbp:typeSpecies | Protohadros byrdi (en) |
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| rdfs:comment | Protohadros („první hadrosaurid“) byl rod iguanodontního dinosaura z křídového období (věk cenoman nebo turon, asi před 95 až 90 miliony let). Fosilie tohoto býložravého ptakopánvého dinosaura byly objeveny v roce 1994 v Texasu (USA). (cs) Protohadros is een geslacht van plantenetende ornithischische dinosauriërs behorend tot de groep van de Euornithopoda dat tijdens het late Krijt leefde in het gebied van het huidige Texas. De enige benoemde soort is Protohadros byrdi. (nl) Protohadros (Protohadros byrdi) – roślinożerny dinozaur z nadrodziny hadrozauroidów (Hadrosauroidea); jego nazwa znaczy "pierwszy hadrozaur". Żył w późnej kredzie (ok. 100-94 mln lat temu) na terenach Ameryki Północnej. Długość ciała ok. 5-6 m, wysokość ok. 1,8-2 m, masa ok. 500 kg. Jego szczątki znaleziono w USA (w stanie Teksas). (pl) Protohadros (лат.) — род травоядных орнитоподовых динозавров надсемейства Hadrosauroidea из мела Северной Америки. Типовой и единственный вид Protohadros byrdi назван и описан американским палеонтологом Джейсоном Хэдом в 1998 году. Название рода образовано из приставки прото-, указывающей на первичность (от дневнегреческого слова «protos», означающее «первый»), и греческого слова «hadros», указывающее на семейство Hadrosauridae. По замыслу автора название Protohadros отражает филогенетический статус динозавра. Видовое имя дано в честь палеонтолога-любителя Гэри Бёрда, нашедшего останки динозавра и оказывавшего помощь в раскопках и анализе образцов, а также за его вклад в палеонтологию формации Woodbine. (ru) 始鴨嘴龍（屬名：Protohadros）意為“第一種鴨嘴龍類”，又名原鴨嘴龍，是晚白堊紀（森諾曼階）恐龍的一屬。始鴨嘴龍屬於禽龍類，是存活到很晚的原始鴨嘴龍類。牠們的化石發現於德州。模式種是伯德氏始鴨嘴龍（P. byrdi），由Jason Head在1998年所敘述、命名。 在1994年，一位業餘古生物學家Gary Byrd在德州登頓郡Flower Mound市發現了這種鴨嘴龍類。牠們由南衛理公會大學的Jason Head所命名、敘述。始鴨嘴龍生存於9,500萬年前，比大部分其他鴨嘴龍類還早，使牠們成為已知最古老的鴨嘴龍類，並成為鴨嘴龍類祖先候選者之一。在發現始鴨嘴龍之前，鴨嘴龍類的祖先被認為是位在亞洲的類似禽龍類恐龍。始鴨嘴龍的發現讓焦點轉向北美洲。 自從發現始鴨嘴龍的化石後，包括部分頭顱骨、部份肋骨、以及腳部骨頭，許多始鴨嘴龍的重建圖是根據想像的。始鴨嘴龍身長6公尺，擁有許多鴨嘴龍類特徵。牠們可能有大而深的頜部，嘴部前方有典型的缺乏牙齒鴨嘴，臉頰有大量、成排的咀嚼用牙齒，可壓碎堅硬的植物。如同較晚的鴨嘴龍類，始鴨嘴龍的後腿可能較前肢長，當吃地面植物或矮樹時可以用四肢行走，也可以在行走或奔跑時只使用二足。在晚白堊紀早期，始鴨嘴龍居住的地區是一片矮森林與沼澤，氣候是溫暖、潮濕，提供始鴨嘴龍充足的植被。 (zh) Protohadros (meaning "first hadrosaur") is a genus of herbivorous ornithischian dinosaur from the Late Cretaceous (Cenomanian stage). Gary Byrd, a part-time palaeontologist, discovered some remains of this euornithopod (ribs and an ungual) during early 1994 at Flower Mound, Denton County, north-central Texas. He informed professional palaeontologist of the find, who arranged for the entire preserved fossil to be excavated. It was first reported upon in 1996 by of the Dedman College of Humanities and Sciences, Southern Methodist University. The type species Protohadros byrdi was described and named by Head in 1998. The genus name is derived from Greek πρῶτος, protos, "first", en ἁδρός, hadros, "thick", a reference to the fact that Head considered the species the oldest known hadrosaur. Th (en) Protohadros byrdi Protohadros Genre † Protohadros, 1998 Espèce † Protohadros byrdi, 1998 Protohadros est un genre éteint de dinosaures ornithopodes appartenant à la super-famille des Hadrosauroidea. Il vivait en Amérique du Nord, au début du Crétacé supérieur, au Cénomanien, soit il y a environ entre 100,5 et 93,9 millions d'années. Une seule espèce est connue : Protohadros byrdi, décrite par en 1998. (fr) |
| rdfs:label | Protohadros (cs) Protohadros (fr) Protohadros (nl) Protohadros (en) Protohadros (pl) Protohadros (ru) 始鸭嘴龙 (zh) |
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