''Aramus paludigrus'' is an extinct
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
limpkin
The limpkin (''Aramus guarauna''), also called carrao, courlan, and crying bird, is a large wading bird related to rails and cranes, and the only extant species in the family Aramidae. It is found mostly in wetlands in warm parts of the America ...
, semi-
aquatic bird
A water bird, alternatively waterbird or aquatic bird, is a bird that lives on or around water. In some definitions, the term ''water bird'' is especially applied to birds in freshwater ecosystems, although others make no distinction from seabi ...
s related to
cranes (order
Gruiformes
The Gruiformes are an order (biology), order containing a considerable number of living and extinct bird family (biology), families, with a widespread geographical diversity. Gruiform means "crane-like".
Traditionally, a number of wading and t ...
), which are similar. ''Aramus paludigrus'' was found in the famous
Konzentrat-Lagerstätte of the
Honda Group at
La Venta
La Venta is a pre-Columbian archaeological site of the Olmec civilization located in the present-day Mexican state of Tabasco. Some of the artifacts have been moved to the museum "Parque - Museo de La Venta", which is in nearby Villahermosa, ...
, dating from the mid-
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
period, in central
Colombia
Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...
.
[Rasmussen, Tab, 1997. Birds. In: R. F. Kay; R. H. Madden; R. L. Cifelli & J. J. Flynn (eds.) ''Vertebrate paleontology in the neotropics - the Miocene fauna of La Venta, Colombia. Smithsonian Institution Press''.]
Description
This bird was described in 1997 based on a nearly complete
tibiotarsus
The tibiotarsus is the large bone between the femur and the tarsometatarsus in the leg of a bird. It is the fusion of the proximal part of the tarsus with the tibia.
A similar structure also occurred in the Mesozoic Heterodontosauridae. These sm ...
bone, very similar to its modern relative, the limpkin ''Aramus garaudana'', although this element measured about long, which implies a 20% larger size. It also differs from the modern species in which this bone has larger lateral
condyles
A condyle (;Entry "condyle"
in
Psophia
''Psophia'' is a genus of birds restricted to the humid forests of the Amazon and Guiana Shield in South America. It is the only genus in the family Psophiidae. Birds in the genus are commonly known as trumpeters, due to the trumpeting or cackli ...
'').
The general structure of this animal should not very different from the modern limpkins, being a rather sedentary bird (no remains are known from other parts of
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
), and what is known of the strata in which he found, had to wade through swamps in search of
snail
A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastro ...
s,
insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...
s and
bivalves
Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...
to feed on them, that led to their scientific name, as in
Greek
Greek may refer to:
Greece
Anything of, from, or related to Greece, a country in Southern Europe:
*Greeks, an ethnic group.
*Greek language, a branch of the Indo-European language family.
**Proto-Greek language, the assumed last common ancestor ...
''paludigrus'' can be translated as "marsh crane."
See also
*
Honda Group
References
{{Taxonbar, from=Q4784037
Gruiformes
Miocene birds of South America
Laventan
Neogene Colombia
Fossils of Colombia
Honda Group, Colombia
Fossil taxa described in 1997