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 Distribution area: southern Sichuan, northern Guizhou, western Hubei, southern Anhui 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 : Weight : (g) approx. Please read the following information before shopping：There may be chromatic aberrations in the photos of the items, and the weight and size cannot be accurately measured.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.If you have any questions or suggestions about this project, please contact me.Item location: Guangdong, ChinaReceiving location: worldwideShipping and handling fees: Free shippingShip to: all over the worldService: Standard SpeedPAK from China/Hong Kong/TaiwanDelivery date: The delivery time will vary from time to time, especially during peak hours.ToProcessing 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.refund policy:Please contact the seller within 30 days after receiving the item. Contact me instead of submitting a case right away.Return shipping fee: The buyer pays the return shipping feeI will carefully read the credit evaluation left by each buyer, and remember in my heart thank you!
Price: 49.99 USD
Location: GuanDong
End Time: 2025-01-18T02:14:04.000Z
Shipping Cost: 0 USD
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Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Featured Refinements: Trilobite/Fossil
Country/Region of Manufacture: China
Modified Item: No
