Gerastos

Gerastos
Temporal range: Early-Middle Devonian
Gerastos tuberculatus from Morocco
Gerastos sp. from Morocco
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: †Artiopoda
Class: †Trilobita
Order: †Proetida
Family: †Proetidae
Genus: †Gerastos
Goldfuss, 1843
Species
  • G. cornix Van Viersen, 2021[1]
  • G. granulosus Goldfuss, 1843
  • G. kesselaeri Van Viersen, Taghon & Magrean, 2019[2]
  • G. silvicultrix Van Viersen, Taghon & Magrean, 2019[2]
  • G. tuberculatus marocensis Chatterton et al., 2006

Gerastos is a genus of proetid trilobite in the family Proetidae that lived between the Pragian and Eifelian of the Lower-Middle Devonian, spanning approximately 21 million years.[3]

It was described by Goldfuss in 1843.[3]

Distribution

Gerastos has been found in the Devonian of Belgium, Germany, the Czech Republic and Morocco.[3]

Description

Gerastos has holochroal eyes situated to the side of its enlarged glabella region of the cephalon. The surface of the cephalon can be smooth or covered with pustules.[4][5]

Length rarely exceeds 3 cm.[citation needed]

References

  1. ^ van Viersen, A. P. (2021). "Type and other species of Gerastos and allied genera (Trilobita, Proetinae) from the Siluro-Devonian". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 299 (2): 185–217. doi:10.1127/njgpa/2021/0964. ISSN 0077-7749. S2CID 233910967.
  2. ^ a b Allart P. van Viersen; Peter Taghon; Benedikt Magrean (2019). "Early Middle Devonian trilobites and events in the Nismes – Vireux-Molhain area, southern border of the Dinant Synclinorium (Belgium, northern France)". Geologica Belgica. 22 (1–2): 7–33. doi:10.20341/gb.2019.001.
  3. ^ a b c "Fossilworks: Hollardops". fossilworks.org. Retrieved 17 December 2021.
  4. ^ Van Viersen, Allart; Prescher, Harald (2008-10-31). "Devonian Proetidae (Trilobita) from the Ardennes Massif (Belgium, N France) and the Eifel Hills (W Germany)". Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre. 78: 9–29.
  5. ^ Gibb, Stacey; Chatterton, Brian (2010-01-01). "Gerastos (Order Proetida; Class Trilobita) from the Lower to Middle Devonian of the southern Moroccan Anti-Atlas region". Palaeontographica Canadiana. 29: 1–89.


Stub icon

This trilobite-related article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.