推荐回答(2个)
7月3日,省国土资源厅举行的河南恐龙化石群发掘第一期成果发布称,新发现的化石距今约1亿年至8500万年,属晚白垩纪早期。在汝阳县已找到30余处恐龙化石点,从其中5处出土了6种以上恐龙,其中“洛阳中原龙”是目前我国唯一发现的大型结节龙类甲龙,改写了中国无结节龙的说法。“汝阳黄河巨龙”属蜥脚类恐龙新物种,长18米,前肢高约6米,肩宽达3米,专家推算其体重足有60吨,相当于10头大象,是迄今发现的亚洲最高、最重的恐龙。
在汝阳还发现了另一
恐龙新种类,它的背椎和尾椎比汝阳黄河巨龙粗大很多,目前尚未完成发掘和鉴定,省地质博物馆副馆长徐莉博士称,它有望超过汝阳黄河巨龙,成为“亚洲第一龙”。
在栾川县则发现了小型兽脚类恐龙为主的化石群,已认定了6种恐龙和至少4种恐龙蛋化石。其中的驰龙类新属种已被命名为“河南栾川盗龙”。同时发掘出一具完整的窃蛋龙类新属种,体长不足0.6米,是已知的世界上个体最小的恐龙。
汝阳的红色岩层原来一直被认为属新生代早期,现在已重新认定为中生代白垩纪。巨型蜥脚类恐龙在此出现,表明当时这里气候湿润,植物茂盛。
在汝阳发掘点现场,来自德国的恐龙专家大卫·宏说:“河南会成为全球研究恐龙最有价值的地方。”已有30多位来自国内外恐龙专家赶到河南,进行考察研究。
中科院古脊椎动物与古人类研究所研究员董枝明说,这一带处于我国秦岭东端,从这里一直绵延到陕南,都可能有恐龙化石发现。
在我省南阳出土恐龙蛋化石群后人们一直奇怪,为何没能找到恐龙化石群。这次发现,专家们正试图从中找到一些线索和联系。他们称,对河南恐龙化石群的发掘和研究工作才刚开始,今后还会有重大发现。 赵洪山摄
7月3日,省国土资源厅举行的河南恐龙化石群发掘第一期成果发布称,新发现的化石距今约1亿年至8500万年,属晚白垩纪早期。在汝阳县已找到30余处恐龙化石点,从其中5处出土了6种以上恐龙,其中“洛阳中原龙”是目前我国唯一发现的大型结节龙类甲龙,改写了中国无结节龙的说法。
“汝阳黄河巨龙”属蜥脚类恐龙新物种,长18米,前肢高约6米,肩宽达3米,专家推算其体重足有60吨,相当于10头大象,是迄今发现的亚洲最高、最重的恐龙。
恐龙种类多,体形和习性相差也大,其中最大的易碎双腔龙可能超过50米,而最小的蜂鸟可能还不到10厘米。就食性来说,有温顺的草食者和凶暴的肉食者,还有荤素都吃的杂食性恐龙。
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