Drepanaspis

Drepanaspis
Temporal range: Early Devonian
D. gemuendenensis reconstruction.
D. gemuendenensis from Gemunden, Eifel, Germany.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Infraphylum: Agnatha
Class: †Pteraspidomorphi
Subclass: †Heterostraci
Order: †Pteraspidiformes
Family: †Psammosteidae
Genus: †Drepanaspis
Type species
Drepanaspis gemuendenensis
Schluter, 1887
Species
  • D. gemuendenensis
  • D. sehrieli Gross, 1933
  • D. lipperti Gross, 1937
  • D. jaegeri Tarlo, 1964
  • D. earteri (McCoY, 1851)
  • D. edwardsi Tarlo, 1964

Drepanaspis (from Greek: δρεπάνη drepánē 'sickle' and Greek: ἀσπίς aspís 'shield') is an extinct genus of heterostracan armoured jawless fish from the Early Devonian (approximately 416 - 397 mya).[1] Drepanaspis are assumed to have lived primarily in marine environments and is most commonly characterized by their ray-like, heavily armoured bodies, along with their lack of paired fins and jaws.[2][3]

  1. ^ Blieck, Alain; Tarrant, Peter R. (February 2001). "Protopteraspis Gosseleti (Vertebrata: Pteraspidomorphi: Heterostraci) from the Lower Devonian of Shropshire, England". Geologica Belgica. 44 (1): 95–112. Bibcode:2001Palgy..44...95B. doi:10.1111/1475-4983.00171. ISSN 0031-0239. S2CID 128543528.
  2. ^ Cite error: The named reference :0 was invoked but never defined (see the help page).
  3. ^ Romer, Alfred Sherwood; Williams, George C. (1976). "The Early Evolution of Fishes". The Quarterly Review of Biology. 51: 202–240. doi:10.1086/408998. ISSN 0033-5770. JSTOR 2823067. S2CID 225068015.