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Paraptenodytes antarcticus
Taxonomy
Palaeospheniscus antarcticus was named by Moreno and Mercerat (1891). Its type specimen is Museo de La Plata, a set of limb elements (femur, tibia, tarsometatarsus), and it is a 3D body fossil. Its type locality is Cerro del Castillo, Trelew, which is in an Aquitanian/Burdigalian shallow subtidal sandstone in the Gaiman Formation of Argentina.
It was recombined as Paraptenodytes antarcticus by Ameghino (1891), Ameghino (1894), Ameghino (1905), Lambrecht (1933), Simpson (1946), Brodkorb (1963), Acosta Hospitaleche (2005), Bertelli et al. (2006), Ksepka and Bertelli (2006), Acosta Hospitaleche and Tambussi (2008), Acosta Hospitaleche et al. (2008) and Tambussi et al. (2023).
It was recombined as Paraptenodytes antarcticus by Ameghino (1891), Ameghino (1894), Ameghino (1905), Lambrecht (1933), Simpson (1946), Brodkorb (1963), Acosta Hospitaleche (2005), Bertelli et al. (2006), Ksepka and Bertelli (2006), Acosta Hospitaleche and Tambussi (2008), Acosta Hospitaleche et al. (2008) and Tambussi et al. (2023).
Synonymy list
Year | Name and author |
---|---|
1891 | Paraptenodytes antarcticus Ameghino p. 447 |
1891 | Palaeospheniscus antarcticus Moreno and Mercerat p. 16 figs. Plate 2, Fig. 1, 2, |
1894 | Paraptenodytes antarcticus Ameghino |
1905 | Paraptenodytes antarcticus Ameghino p. 139 |
1933 | Paraptenodytes antarcticus Lambrecht p. 232 |
1946 | Paraptenodytes antarcticus Simpson p. 33 |
1963 | Paraptenodytes antarcticus Brodkorb p. 238 |
2005 | Paraptenodytes antarcticus Acosta Hospitaleche p. 408 |
2006 | Paraptenodytes antarcticus Bertelli et al. p. 1 |
2006 | Paraptenodytes antarcticus Ksepka and Bertelli p. 389 |
2008 | Paraptenodytes antarcticus Acosta Hospitaleche et al. p. 568 |
2008 | Paraptenodytes antarcticus Acosta Hospitaleche and Tambussi p. 118 |
2023 | Paraptenodytes antarcticus Tambussi et al. p. 273 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Paraptenodytes antarcticus Moreno and Mercerat 1891
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Diagnosis
Reference | Diagnosis | |
---|---|---|
C. Acosta Hospitaleche and C. Tambussi 2008 | Tarsometatarsus. Metatarsals distally inclined to- wards the medial side. Both foramina vascularia proximalia open at the same level. Tuberositas musculi tibialis cranialis extended and rounded. Sulci longitudinalis dorsalis shallow and subequal in size. Absence of fossae infracotylaris dorsa- lis medialis and lateralis. Lateral surface with a rib weakly marked towards the facies caudalis. Robust trochleas, with a strong trochlear divergence. The cranial extension of the trochlea IV is larger than those of digits II and III. Trochlea III triangular in shape, with strong and divergent margins. Hypotarsus with two parallel cristae intermediae, one cris- tae medialis developed proximally to the foramen vasculare
proximale mediale (oblique to the cristae intermediae), and one weakly developed crista lateralis hypotarsi, proximal and lateral to the foramen vasculare proximale laterale. |
Measurements
No measurements are available
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Source: subo = suborder, o = order | |||||
References: Benton 1983, Bush and Bambach 2015, Marsh 1875 |
Age range: base of the Aquitanian to the top of the Santacrucian or 23.03000 to 16.30000 Ma
Collections (3 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Aquitanian | Argentina (Chubut) | Palaeospheniscus antarcticus (142513) | |
Aquitanian - Burdigalian | Argentina (Chubut) | Palaeospheniscus antarcticus (type locality: 47303) | |
Santacrucian | Argentina (Santa Cruz) | Palaeospheniscus antarcticus (27313) |