Pteraspidomorphi information

Pteraspidomorphi is an extinct class of early jawless fish. They have long been regarded as closely related or even ancestral to jawed vertebrates, but...

are currently grouped with arandaspids and astraspids in the clade Pteraspidomorphi (Gagnier 1993, 1995; Donoghue & Smith 2001; Sansom et al. 2005), in...

gnathostomes), and hagfish. The group represents a subclass within the class Pteraspidomorphi, and contains only one order, the Arandaspidiformes. The oldest known...

ventral webs and an elongated notochordal lobe. Astraspis Sacabambaspis "Pteraspidomorphi". Retrieved 28 October 2013. Ritchie, Alexander; Gilbert-Tomlinson...

Hyperoartia (lampreys) Class †Conodonta Class †Myllokunmingiida Class †Pteraspidomorphi Class †Thelodonti Class †Anaspida Class †Cephalaspidomorphi Infraphylum...

scheme, with the following major groups: Class Myxini (hagfish) Class Pteraspidomorphi † (early jawless fish) Class Thelodonti † Class Anaspida † Class Petromyzontida...

†Pteraspidomorphi †Thelodonti...

mya) that belonged to the phylum Chordata, infraphylum Agnatha, class Pteraspidomorphi, and the subclass Heterostraci. Drepanaspis are assumed to have lived...

toothed, funnel-like sucking mouth. The extinct Pteraspidomorphi, ancestral to jawed vertebrates Pteraspidomorphi is an extinct class of early jawless fish...

Ordovician fish" Palaeontology, 40 (3): 625–642. Michael J. Benton, Vertebrate Palaeontology, 3rd edition, 2005 Palaeos' Pteraspidomorphi v t e v t e...

450 million years ago) in North America. They are placed among the Pteraspidomorphi because of the large dorsal and ventral shield of their head armor...

the basal heterostracans of the Silurian. Haaramo, Mikko (2007). "†Pteraspidomorphi". Mikko's Phylogeny Archive. Retrieved 30 December 2016. Paleontology...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

†Myllokunmingia fengjiaoa †Zhongjianichthys rostratus †Conodonta †Cephalaspidomorphi †Pteraspidomorphi †Osteostraci Gnathostomata...

" Zoologica Scripta 37.4 (2008): 391-403. Haaramo, Mikko (2007). "†Pteraspidomorphi". Mikko's Phylogeny Archive. Retrieved 30 December 2016. tolweb.org...

Scientific classification Kingdom: Animalia Phylum: Chordata Class: Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes Suborder: Cyathaspidida...

of armour. The dorsal shield is flat. "Palaeos Vertebrates 40.500  Pteraspidomorphi: Amphiaspidida". 2008-03-19. Archived from the original on 2008-03-19...

Eukaryota Kingdom: Animalia Phylum: Chordata Infraphylum: Agnatha Class: †Pteraspidomorphi Subclass: †Heterostraci Order: †Pteraspidiformes Family: †Pteraspididae...

(including Gnathostomata) †Conodonta Cyclostomi †Myllokunmingiida? †Metaspriggina? †Palaeospondylus? †Pteraspidomorphi †Thelodontomorphi †Yunnanozoonidae?...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

Eukaryota Kingdom: Animalia Phylum: Chordata Infraphylum: Agnatha Class: †Pteraspidomorphi Subclass: †Heterostraci Order: †Cyathaspidiformes Clade: †Cyathaspidida...

†Pteraspidomorphi (jawless fish) ?†Thelodonti (jawless fish with scales) unnamed...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

lateral eyes and a series of eight gill openings on each side. Pteraspidomorphi Pteraspidomorphi is an extinct class of early jawless fish. The fossils show...

Scientific classification Kingdom: Animalia Phylum: Chordata Class: Pteraspidomorphi Order: Arandaspida Genus: Apedolepis Young, 1997 Species A. tomlinsonae...

†Conodonts †Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida...

through vegetation, eating small invertebrates which it knocked loose . "Pteraspidomorphi: Psammosteida (2): Guerichosteids, Pycnosteids, Psammosteids & Psammolepis"...