First Articulated Phyllolepid Placoderm from North America, with Comments on Phyllolepid Systematics

Long, John A.; Daeschler, Edward B.

doi:10.1635/053.162.0103

Cited by 6 publications

(12 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other phyllolepids are known from the Middle Devonian of Gondwana with the genera Austrophyllolepis , Placolepis , Cobandrahlepis , Cowralepis and Yurammia . Late Devonian (Famennian) phyllolepids from Euramerica all belong to the genus Phyllolepis (Young , b, c; Dupret and Zhu ; Long and Daeschler ).…”

Section: Strud Flora and Faunamentioning

confidence: 99%

“…Long and Daeschler (, p. 37) advocated ‘that the identification of phyllolepid placoderms from disarticulated material is only possible if a large associated assemblage is known, as for Placolepis from Braidwood, Australia (Ritchie ) or Phyllolepis species from East Greenland (Stensiö , , )’. This is now the case for P. undulata of which most plates of the trunk shield are known.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…This is now the case for P. undulata of which most plates of the trunk shield are known. Long and Daeschler () added ‘the identification of genera from isolated plates remains uncertain based only on plate shape and ornamentation unless one of the diagnostic plates is present (marginal or paranuchal)’. Even if no marginal plates of P. undulata are currently recognized, the paranuchal plates are numerous and correspond (except one doubtful plate, see above) to Phyllolepis (paranuchal with the anterior extremity of the main lateral line located at about half‐length of the lateral side (Long )).…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Long and Daeschler (, p. 37) listed the valid Phyllolepis species that can be confidently diagnosed (i.e. P. woodwardi , P. orvini , P. nielseni , P. rossimontina (here put in synonymy with P. undulata ) and P. thomsoni ) .…”

Section: Systematic Palaeontologymentioning

confidence: 99%

See 3 more Smart Citations

Characterization of the placoderm (Gnathostomata) assemblage from the tetrapod‐bearing locality of Strud (Belgium, upper Famennian)

et al. 2015

Self Cite

View full text Add to dashboard Cite

The placoderm fauna of the late Famennian tetrapod‐bearing locality of Strud, Belgium, is studied on the basis of historical and newly collected material. It includes the previously described antiarch Grossilepis rikiki, the groenlandaspidid Turrisaspis strudensis sp. nov. and the actinolepidoideid Phyllolepis undulata. P. undulata is thoroughly described and joins the list of the valid Phyllolepis species confidently diagnosed. A morphometrical analysis performed on the centronuchal and anterior ventrolateral plates of the Phyllolepis material demonstrates that there is only one species of Phyllolepis in Belgium (thus, Phyllolepis konincki becomes a junior synonym of P. undulata), that P. rossimontina (Pennsylvania) is a synonym of P. undulata and that the unity of the genus Phyllolepis is strongly supported, although the characterization of several species within this genus is blurred. The strong resemblance between the faunal compositions in Strud and Red Hill (Pennsylvania, USA) suggests important faunal exchanges between these regions of the Euramerica landmass.

show abstract

Section: Strud Flora and Faunamentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

See 2 more Smart Citations

Characterization of the placoderm (Gnathostomata) assemblage from the tetrapod‐bearing locality of Strud (Belgium, upper Famennian)

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Placoderm remains are known from Asia, Australia, Africa, Europe and South and North America (Denison, 1978;Janvier et al, 1997;Szrek, 2006;Janvier, 2007;Long & Trinajstic, 2010;Long & Daeschler, 2013;Olive et al, 2016). Among these bony plates, scales, tooth plates and even elements of the axial skeleton of placoderms are represented (Ritchie, 2005;Trinajstic & Hazelton, 2007;Johanson & Trinajstic, 2014), but the plates are most of-ten encountered remains of armoured fishes, as a result of which they are diagnostic features not only of several orders of Placodermi (representatives of different orders may possess different patterns of sculpture; see Fig.…”

Section: Introductionmentioning

confidence: 99%

Ornamentation of dermal bones of Placodermi from the Lower Devonian of Morocco as a measure of biodiversity

Antczak

Berkowski

2017

Geologos

View full text Add to dashboard Cite

Dermal bones are formed early during growth and thus constitute an important tool in studies of ontogenetic and evolutionary changes amongst early vertebrates. Ornamentation of dermal bones of terrestrial vertebrates is often used as a taxonomic tool, for instance in Aetosauria, extant lungfishes (Dipnoi) and ray-finned fishes (Actinopterygii), for which it have been proved to be of use in differentiating specimens to species level. However, it has not been utilised to the same extent in placoderms. Several features of the ornamentation of Early Devonian placoderms from Hamar Laghdad (Morocco) were examined using both optical and scanning electron microscopy to determine whether it is possible to distinguish armoured Palaeozoic fishes. Four distinct morphotypes, based on ornamentation of dermal bones, are differentiated. These distinct types of ornamentation may be the result of either different location of dermal plates on the body or of ontogenetic (intraspecific) and/or interspecific variation.

show abstract

Glyptopomus bystrowi (Gross, 1941), an “osteolepidid” tetrapodomorph from the Upper Famennian (Upper Devonian) of Latvia and Central Russia

Lebedev

Lukševičs

2016

Palaeobio Palaeoenv

View full text Add to dashboard Cite

First Articulated Phyllolepid Placoderm from North America, with Comments on Phyllolepid Systematics

Cited by 6 publications

References 36 publications

Characterization of the placoderm (Gnathostomata) assemblage from the tetrapod‐bearing locality of Strud (Belgium, upper Famennian)

Characterization of the placoderm (Gnathostomata) assemblage from the tetrapod‐bearing locality of Strud (Belgium, upper Famennian)

Ornamentation of dermal bones of Placodermi from the Lower Devonian of Morocco as a measure of biodiversity

Glyptopomus bystrowi (Gross, 1941), an “osteolepidid” tetrapodomorph from the Upper Famennian (Upper Devonian) of Latvia and Central Russia

Contact Info

Product

Resources

About