231g Ancient Cambrian invertebrate coronocephalus trilobite fossils specimen

Description: Crown worms are ancient invertebrates, a genus of the class Trilobites. The edge of the head has a series of small protrusions, shaped like a crown, hence the name. The number of segments in the central axis of the tail is more than that in the costal leaves on both sides. The length of the intact insect is 3-6cm. Chinese name: crown worm Latin name: Coronocephalus Kingdom: kingdom of animals Class: Class Trilobites Order: Sphinocephala Suborder: Suborder Maniophora Family: cometariidae Genus: Diaphora Origin: Western Hunan Province, China Age: Cambrian period Basic Information: The crown worm has a crescent-shaped head to a sub-triangular shape with long cheek spines. The head saddle is wide in the front and narrow in the rear. The anterior lobe is quite large, and it merges with the anterior part of the false saddle. The posterior part is significantly contracted and is rod-shaped. The narrow part of the back is crossed by 3 deep and wide transverse grooves; there are 9 on the edge of the movable cheek Dentoid tumor, with a thick tumor on the head, 11 segments on the chest; triangular tail, narrow central axis, plano convex, gradually narrowing backward, divided into 35-45 segments. The ribs have fewer joints, consisting of 14-15 simple ribs without grooves, and no ribs on the outer ends of the ribs. Survival age: The age of the crown worm is the Middle Silurian. Distribution area: the most in southern China, the main production is southern Sichuan, northern Guizhou, western Hubei, and southern Anhui. There are also discoveries in Japan. Living environment: Crown worms live in shallow waters. Size: The complete body of a single crown worm is 3 to 6 cm long. Research significance: The Chinese king crown worm fossil is one of the important fossils in the Early Paleozoic, and it is an important basis for the division and comparison of the Cambrian strata. Slate size and weight: Size : 75×65×22 mm(Widest point) Weight : 231 (g) approx. ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆ We hope customers understand the following terms and conditions before purchase to avoid disputes. There may be chromatic aberrations in the photo of the item. The weight and size of the item are not measured by precision instruments (so there may be minor errors) Since the item is not described in detail, please check the photo carefully before purchasing and pay attention to the weight and size of the item. Try to avoid buying items you don't like. If you are not satisfied with the items you received, please contact me to find a perfect solution before submitting a case. Item location: Guangdong, China Receiving location: worldwide Shipping and handling fees: Free shipping Ship to: all over the world Service: Standard SpeedPAK from China Delivery date: The delivery time will vary from time to time, especially during peak hours. To Processing time: Usually the goods will be shipped within 1-3 working days after receiving the full payment. Taxes: Taxes may be paid at checkout. Note: All duties and taxes in the country/region where the buyer is located are fully borne by the buyer. Return Policy ★ All returns must be shipped back within 7 days of the received delivery confirmation date that it was delivered to you. ★ Buyer is responsible for return shipping and delivery confirmation fees. ★ Once shipped you MUST email us the delivery confirmation # so we can follow the package. ★ Once we receive your return, your refund will be processed within 7 business days. ★ No refunds are available for damage or used products for any reason.. All Custom orders are non refundable. Sizing does not affect the return policy. Contact Us ★ Please use the link "Ask the Seller Question" or send "eBay message" in "My eBay" to contact us if you have problems, special requests or suggestions, we are very glad to help you anytime

Price: 49 USD

Location: Guangdong

End Time: 2023-11-22T08:33:43.000Z

Shipping Cost: 0 USD