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Showing results for tags 'coptoclava'.
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Trading my Guizhou ammonite or Yixian diving beetle larva for a starfish
-Andy- posted a topic in Member-to-Member Fossil Trades
Hi all, I have a particular request. I want to trade for a starfish or brittlestar I can trade one of the following two fossils: Predaceous diving beetle larva Coptoclava longipoda 125.5 - 122.5 mya | early Cretaceous Yixian Formation Liutiaogou Village, Dashuangmiao Town, Ningcheng County, Nei Mongol There are several additional insects as seen in the pictures below Black ammonite Trachyceras multituberculatum 232 - 221.5 mya | late Triassic Xiaowa Formation Lower Member, upper unit Guanling, Guizhou Province Matrix is 65 mm long Thank you - Andy- 1 reply
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A predaceous water beetle. Taxonomy from Xianye et al. 2018. Diagnosis (Xianye et al. 2018, p. 4): "Head prognathous with strong mandibles; a pair of rounded compound eyes on the sides of the head; femur narrow and slightly longer than the tibia, with a pair of strong spurs; tarsus pointed towards the end, with a pair of strong claws; abdomen with 8 sterna with a spiracle on each side; female has three pairs of valvulae attached to the eighth sternum; elytra scabrous with a few longitudinal striae; the junctions of the front and posterior margins of the elytra are clearly angled, the elytra protruding, the front edge arcuate." Line drawing from Xianye et al. 2018, p. 15: Identified by oilshale. References: C. Ping. 1928. Study of the Cretaceous fossil insects of China. Palaeontologia Sinica, Series B 13:5-57. Xianye, Z., Xiangdong, Z., Jarzembowski, E.A., Lei, C., Bo, W., (2018) First record of adult Coptoclava longipoda Ping (Coleoptera: Coptoclavidae) from the Lower Cretaceous of Laiyang, China, Cretaceous Research, doi: 10.1016/j.cretres.2018.08.013.
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